{"id":175,"date":"2025-02-20T21:14:30","date_gmt":"2025-02-20T12:14:30","guid":{"rendered":"https:\/\/kakomonselect.site\/?p=175"},"modified":"2025-03-26T21:01:50","modified_gmt":"2025-03-26T12:01:50","slug":"%e5%8d%83%e8%91%89%e7%9c%8c%e5%85%ac%e7%ab%8b%e9%ab%98%e6%a0%a1%e5%85%a5%e8%a9%a6%e3%80%802025%e5%b9%b4%e3%80%80%e6%95%b0%e5%ad%a6","status":"publish","type":"post","link":"https:\/\/kakomonselect.site\/?p=175","title":{"rendered":"\u5343\u8449\u770c\u516c\u7acb\u9ad8\u6821\u5165\u8a66\u30002025\u5e74\u3000\u6570\u5b66"},"content":{"rendered":"<!DOCTYPE html>\n<html><p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-sango-orange-color\">\u6700\u5f8c\u306b\u3001\u50be\u5411\u3068\u5bfe\u7b56\u30fb\u9ad8\u6821\u5165\u8a66\u306e\u3057\u304f\u307f\u306a\u3069\u3078\u306eLINK\u304c\u3042\u308a\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-0\">\uff11<\/h2>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n    <h1 id=\"i-1\">\u6570\u5b66\u554f\u984c\u7528\u7d19<\/h1>\n\n    <h2 id=\"i-2\">\u554f\u984c1<\/h2>\n    <div class=\"problem\">\n        \u6b21\u306e\uff081\uff09\uff5e\uff087\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002\n\n        <div class=\"sub-problem\">\n            <p>\uff081\uff09\u6b21\u306e\u2460\uff5e\u2462\u306e\u8a08\u7b97\u3092\u3057\u306a\u3055\u3044\u3002<\/p>\n            <p>\u2460 \\(15+(-7) \\times 3\\)<\/p>\n            <p>\u2461 \\((6a+10b) \\div 2+4a\\)<\/p>\n            <p>\u2462 \\((x+y)^2-(x-y)^2\\)<\/p>\n        <\/div>\n\n<\/div><\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"cfcd208495d565ef66e7dff9f98764da\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"c4ca4238a0b923820dcc509a6f75849b\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2462\u3000<span class=\"masked-text\" data-memorizer-key=\"c81e728d9d4c2f636f067f89cc14862c\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<div class=\"sub-problem\">\n            <p>\uff082\uff09\u9023\u7d9a\u3059\u308b3\u3064\u306e\u6b63\u306e\u6574\u6570\u304c\u3042\u308b\u3002\u6700\u3082\u5c0f\u3055\u3044\u6570\u3068\u6700\u3082\u5927\u304d\u3044\u6570\u306e\u7a4d\u304b\u3089\u3001\u4e2d\u592e\u306e\u6570\u306e2\u500d\u306e\u6570\u3092\u3072\u304f\u306862\u306b\u306a\u308b\u3002<\/p>\n            <p>\u4e2d\u592e\u306e\u6570\u3092 \\(x\\) \u3068\u3059\u308b\u3068\u304d\u3001\u6b21\u306e\uff081\uff09\u3001\uff082\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <p>\u2460 \\(x\\) \u306b\u3064\u3044\u3066\u306e\u65b9\u7a0b\u5f0f\u3068\u3057\u3066\u6700\u3082\u9069\u5f53\u306a\u3082\u306e\u3092\u3001\u6b21\u306e\u30a2\uff5e\u30a8\u306e\u3046\u3061\u304b\u30891\u3064\u9078\u3073\u3001\u7b26\u53f7\u3067\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <ul>\n                <li>\u30a2 \\(x^2-64=0\\)<\/li>\n                <li>\u30a4 \\(x^2-4x-60=0\\)<\/li>\n                <li>\u30a6 \\(x^2-2x-63=0\\)<\/li>\n                <li>\u30a8 \\(x^2+16x+64=0\\)<\/li>\n            <\/ul>\n            <p>\u2461 \u6b21\u306e\uff08\u3000\u3042\u3000\uff09\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <p>\u4e2d\u592e\u306e\u6570 \\(x\\) \u306f \uff08\u3000\u3042\u3000\uff09 \u3067\u3042\u308b\u3002<\/p>\n        <\/div>\n\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"eccbc87e4b5ce2fe28308fd9f2a7baf3\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p><a href=\"https:\/\/youtube.com\/shorts\/mr_bM1wIOHo\">Short\u89e3\u8aac\u306f\u3053\u3061\u3089<\/a><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"a87ff679a2f3e71d9181a67b7542122c\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p><a href=\"https:\/\/youtube.com\/shorts\/aQqwzC57_fY\">Short\u89e3\u8aac\u306f\u3053\u3061\u3089<\/a><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n\n<div class=\"sub-problem\">\n            <p>\uff083\uff09\u6b21\u306e\u2460\u3001\u2461\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <p>\u2460\u3000\u6b21\u306e\u30a2\uff5e\u30a8\u306e\u3046\u3061\u3001\u6b63\u3057\u304f\u306a\u3044\u3082\u306e\u30921\u3064\u9078\u3073\u3001\u7b26\u53f7\u3067\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <ul>\n                <li>\u30a2\u30005\u306e\u5e73\u65b9\u6839\u306f \\(\\sqrt{5}\\) \u3068 \\(-\\sqrt{5}\\) \u3067\u3042\u308b\u3002<\/li>\n                <li>\u30a4\u3000\\(\\sqrt{2}\\) \u306f\u5faa\u74b0\u3057\u306a\u3044\u7121\u9650\u5c0f\u6570\u3067\u3042\u308b\u3002<\/li>\n                <li>\u30a6\u3000\u6b63\u306e\u6570 \\(a, b\\) \u306b\u3064\u3044\u3066\u3001\\(a  b\\) \u306a\u3089\u3070 \\(\\sqrt{a}  \\sqrt{b}\\) \u3067\u3042\u308b\u3002<\/li>\n                <li>\u30a8\u3000\\(\\sqrt{4}\\) \u306f\u7121\u7406\u6570\u3067\u3042\u308b\u3002<\/li>\n            <\/ul>\n            <p>\u2461\u3000\u6b21\u306e\uff08\u3000\u3044\u3000\uff09\uff08\u3000\u3046\u3000\uff09\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <p>\\(\\sqrt{90n}\\) \u306e\u5024\u304c\u81ea\u7136\u6570\u3068\u306a\u308b\u3088\u3046\u306a\u3001\u6700\u3082\u5c0f\u3055\u3044\u81ea\u7136\u6570 \\(n\\) \u306f \uff08\u3000\u3044\u3046\u3000\uff09 \u3067\u3042\u308b\u3002<\/p>\n        <\/div>\n\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"e4da3b7fbbce2345d7772b0674a318d5\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"1679091c5a880faf6fb5e6087eb1b2dc\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p><a href=\"https:\/\/youtube.com\/shorts\/k9NrgfdbpRQ\">Short\u89e3\u8aac\u306f\u3053\u3061\u3089<\/a><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n\n <div class=\"sub-problem\">\n            <p>\uff084\uff09\u751f\u5f9232\u4eba\u306b\u30011\u554f4\u70b9\u3001\u5168\u90e8\u30675\u554f\u306e\u6f22\u5b57\u30c6\u30b9\u30c8\u3092\u884c\u3063\u305f\u7d50\u679c\u3001\u6b21\u306e\uff08\u3000\u3000\uff09\u306e\u3068\u304a\u308a\u306b\u306a\u3063\u305f\u3002\u305f\u3060\u3057\u30011\u554f\u306b\u5bfe\u3059\u308b\u5f97\u70b9\u306f\u30010\u70b9\u307e\u305f\u306f4\u70b9\u3060\u3051\u3068\u3059\u308b\u3002<\/p>\n            <ul>\n                <li>\u7b2c1\u56db\u5206\u4f4d\u6570\u306f8\u70b9<\/li>\n                <li>\u7b2c2\u56db\u5206\u4f4d\u6570\u306f12\u70b9<\/li>\n                <li>\u7b2c3\u56db\u5206\u4f4d\u6570\u306f14\u70b9<\/li>\n                <li>\u5f97\u70b9\u304c16\u70b9\u306e\u751f\u5f92\u306f5\u4eba<\/li>\n            <\/ul>\n            <p>\u3053\u306e\u3068\u304d\u3001\u6b21\u306e\uff081\uff09\u306e\uff08\u3000\u3048\u3000\uff09\u3001\uff082\uff09\u306e\uff08\u3000\u304a\u3000\uff09\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n            <p>\u2460\u300032\u4eba\u306e\u5f97\u70b9\u306e\u56db\u5206\u4f4d\u7bc4\u56f2\u306f\uff08\u3000\u3048\u3000\uff09\u70b9\u3067\u3042\u308b\u3002<\/p>\n            <p>\u2461\u300032\u4eba\u306e\u3046\u3061\u3001\u5f97\u70b9\u304c20\u70b9\u306e\u751f\u5f92\u306f\uff08\u3000\u304a\u3000\uff09\u4eba\u3067\u3042\u308b\u3002<\/p>\n        <\/div>\n\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"8f14e45fceea167a5a36dedd4bea2543\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"c9f0f895fb98ab9159f51fd0297e236d\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>(5)\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u3001AD = 1 cm, AE = \u221a3 cm, EF = 2 cm \u306e\u76f4\u65b9\u4f53\u3068\u3001A, B, C, D, E, F, G, H \u306e\u6587\u5b57\u304c1\u3064\u305a\u3064\u66f8\u304b\u308c\u305f8\u679a\u306e\u30ab\u30fc\u30c9\u304c\u3042\u308b\u3002\u3053\u306e8\u679a\u306e\u30ab\u30fc\u30c9\u3092\u3088\u304f\u304d\u3063\u3066\u3001\u540c\u6642\u306b2\u679a\u306e\u30ab\u30fc\u30c9\u3092\u3072\u304f\u3002\u3072\u3044\u305f\u30ab\u30fc\u30c9\u306b\u66f8\u304b\u308c\u305f\u6587\u5b57\u3068\u76f4\u65b9\u4f53\u306e\u9802\u70b9\u306e\u6587\u5b57\u306f\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3082\u306e\u3068\u3057\u3001\u3072\u3044\u305f\u30ab\u30fc\u30c9\u306b\u66f8\u304b\u308c\u305f2\u3064\u306e\u6587\u5b57\u306e\u9802\u70b9\u3092\u7d50\u3093\u3067\u3067\u304d\u308b\u7dda\u5206\u306b\u3064\u3044\u3066\u8003\u3048\u308b\u3002\u4f8b\u3048\u3070\u3001A\u3068B\u306e\u6587\u5b57\u304c\u66f8\u304b\u308c\u305f\u30ab\u30fc\u30c9\u3092\u540c\u6642\u306b\u3072\u3044\u305f\u5834\u5408\u306f\u3001\u7dda\u5206AB\u306b\u3064\u3044\u3066\u8003\u3048\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u3068\u304d\u3001\u6b21\u306e\uff081\uff09\u306e\u300c\u304b\u300d\u3001\u300c\u304d\u300d\u3001\uff082\uff09\u306e\u300c\u304f\u300d\u3001\u300c\u3051\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002\u305f\u3060\u3057\u3001\u3069\u306e\u30ab\u30fc\u30c9\u3092\u3072\u304f\u3053\u3068\u3082\u540c\u69d8\u306b\u78ba\u304b\u3089\u3057\u3044\u3082\u306e\u3068\u3059\u308b\u3002<\/p>\n\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-19.47.06.png\" alt=\"\u76f4\u65b9\u4f53\u3068\u30ab\u30fc\u30c9\">\n\n<p>\u2460 \u3072\u3044\u305f2\u679a\u306e\u30ab\u30fc\u30c9\u306b\u66f8\u304b\u308c\u305f2\u3064\u306e\u6587\u5b57\u306e\u9802\u70b9\u3092\u7d50\u3093\u3067\u3067\u304d\u308b\u7dda\u5206\u306e\u9577\u3055\u304c2 cm\u3067\u3042\u308b\u78ba\u7387\u306f \\(\\frac{{\u304b}}{\\text{\u304d}}\\) \u3067\u3042\u308b\u3002<\/p>\n\n<p>\u2461 \u3072\u3044\u305f2\u679a\u306e\u30ab\u30fc\u30c9\u306b\u66f8\u304b\u308c\u305f2\u3064\u306e\u6587\u5b57\u306e\u9802\u70b9\u3092\u7d50\u3093\u3067\u3067\u304d\u308b\u7dda\u5206\u306e\u9577\u3055\u304c2 cm\u3088\u308a\u9577\u3044\u78ba\u7387\u306f \\(\\frac{\\text{\u304f}}{ \\text{\u3051}}\\) \u3067\u3042\u308b\u3002<\/p>\n\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"45c48cce2e2d7fbdea1afc51c7c6ad26\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"d3d9446802a44259755d38e6d163e820\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\uff086\uff093\u3064\u306e\u76f4\u7dda \\(3x + 2y = 7\\), \\(5x \u2013 4y = 19\\), \\(2x + ay = 11\\) \u304c1\u70b9\u3067\u4ea4\u308f\u308b\u3068\u304d\u3001\u6b21\u306e\u2460\u306e\uff08\u3053\uff09\uff5e\uff08\u3057\uff09\u3001\u2461\u306e\uff08\u3059\uff09\uff08\u305b\uff09\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<p>\u2460\u30003\u3064\u306e\u76f4\u7dda\u306e\u4ea4\u70b9\u306e\u5ea7\u6a19\u306f\uff08\\(\\text{\u3053}\\), \\(\\text{\u3055\u3057}\\)\uff09\u3067\u3042\u308b\u3002<\/p>\n\n<p>\u2461 \\(a\\)\u306e\u5024\u306f \\(\\text{\u3059}\\) \u3067\u3042\u308b\u3002<\/p>\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"6512bd43d9caa6e02c990b0a82652dca\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000<span class=\"masked-text\" data-memorizer-key=\"c20ad4d76fe97759aa27a0c99bff6710\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>\u6570\u5b66\u554f\u984c\u7528\u7d19 \u2013 \u554f\u984c1<\/title>\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\uff087\uff09\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\u3001\u25b3ABC\u304c\u3042\u308b\u3002\u3053\u306e\u25b3ABC\u3092\u3001\u70b9O\u3092\u56de\u8ee2\u306e\u4e2d\u5fc3\u3068\u3057\u3066\u53cd\u6642\u8a08\u56de\u308a\u306b110\u00b0\u3060\u3051\u56de\u8ee2\u79fb\u52d5\u3055\u305b\u305f\u3082\u306e\u304c\u25b3A\u2019B\u2019C\u2019\u3067\u3042\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u3068\u304d\u3001\u6b21\u306e\u2460\u3001\u2461\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.10.43.png\" alt=\"\u4e09\u89d2\u5f62\u306e\u56de\u8ee2\">\n\n<p>\u2460\u3000\u56f3\u306e\u8aac\u660e\u3068\u3057\u3066\u6b63\u3057\u304f\u306a\u3044\u3082\u306e\u3092\u3001\u6b21\u306e\u30a2\uff5e\u30a8\u306e\u3046\u3061\u304b\u30891\u3064\u9078\u3073\u3001\u7b26\u53f7\u3067\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<ul>\n  <li>\u30a2 OA = OA\u2019\u3067\u3042\u308b\u3002<\/li>\n  <li>\u30a4 \u70b9A\u304c\u70b9A\u2019\u307e\u3067\u79fb\u52d5\u3057\u305f\u8de1\u306f\u3001\u76f4\u7dda\u3067\u3042\u308b\u3002<\/li>\n  <li>\u30a6 \u2220COC\u2019 = 110\u00b0\u3067\u3042\u308b\u3002<\/li>\n  <li>\u30a8 \u2220AOA\u2019 = \u2220BOB\u2019\u3067\u3042\u308b\u3002<\/li>\n<\/ul>\n\n<p>\u2461\u3000\u70b9A\u3092\u3001\u70b9O\u3092\u56de\u8ee2\u306e\u4e2d\u5fc3\u3068\u3057\u3066\u53cd\u6642\u8a08\u56de\u308a\u306b55\u00b0\u3060\u3051\u56de\u8ee2\u79fb\u52d5\u3055\u305b\u305f\u70b9P\u3092\u4f5c\u56f3\u3057\u306a\u3055\u3044\u3002\u307e\u305f\u3001\u70b9P\u306e\u4f4d\u7f6e\u3092\u793a\u3059\u6587\u5b57P\u3082\u66f8\u304d\u306a\u3055\u3044\u3002<\/p>\n\n<p>\u305f\u3060\u3057\u3001\u4e09\u89d2\u5b9a\u898f\u306e\u89d2\u3092\u5229\u7528\u3057\u3066\u76f4\u7dda\u3092\u3072\u304f\u3053\u3068\u306f\u3057\u306a\u3044\u3082\u306e\u3068\u3057\u3001\u4f5c\u56f3\u306b\u7528\u3044\u305f\u7dda\u306f\u6d88\u3055\u305a\u306b\u6b8b\u3057\u3066\u304a\u304f\u3053\u3068\u3002<\/p>\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\u2460\u3000<span class=\"masked-text\" data-memorizer-key=\"c51ce410c124a10e0db5e4b97fc2af39\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\u2461\u3000\u3053\u3053\u3092<a href=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.15.04.png\">\u30af\u30ea\u30c3\u30af<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">\uff12<\/h2>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u95a2\u6570 \\(y=ax^2\\) \u306e\u30b0\u30e9\u30d5\u4e0a\u306b2\u70b9 A, B \u304c\u3042\u308a\uff0c\u70b9 A \u306e \\(x\\) \u5ea7\u6a19\u306f -2 \uff0c\u70b9 B \u306e\u5ea7\u6a19\u306f\uff086, 9\uff09\u3067\u3042\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u3068\u304d\uff0c\u6b21\u306e\uff081\uff09\uff5e\uff083\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<p>\u305f\u3060\u3057\uff0c\u539f\u70b9 O \u304b\u3089\u70b9\uff081,0\uff09\u307e\u3067\u306e\u8ddd\u96e2\u53ca\u3073\u539f\u70b9 O \u304b\u3089\u70b9\uff080,1\uff09\u307e\u3067\u306e\u8ddd\u96e2\u3092\u305d\u308c\u305e\u308c 1 cm \u3068\u3059\u308b\u3002<\/p>\n\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.37.44.png\" alt=\"\u95a2\u6570 y=ax^2 \u306e\u30b0\u30e9\u30d5\u3068\u70b9 A, B\">\n<p>\uff081\uff09\u6b21\u306e\u300c\u305d\u300d\uff0c\u300c\u305f\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n<p>\\(a=\\frac{\\text{\u305d}}{\\text{\u305f}}\\) \u3067\u3042\u308b\u3002<\/p>\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff08\uff11\uff09<span class=\"masked-text\" data-memorizer-key=\"aab3238922bcc25a6f606eb525ffdc56\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\uff082\uff09\u6b21\u306e\u300c\u3061\u300d\u300c\u3064\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n<p>\\(\\triangle\\text{OAB}\\) \u306e\u9762\u7a4d\u306f \uff08\\(\\text{\u3061}\\), \\(\\text{\u3064}\\)\uff09\\(\\text{cm}^2\\) \u3067\u3042\u308b\u3002<\/p>\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff082\uff09<span class=\"masked-text\" data-memorizer-key=\"9bf31c7ff062936a96d3c8bd1f8f2ff3\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\uff083\uff09\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u76f4\u7dda AO \u4e0a\u306b\u70b9 C \u3092\uff0c\u95a2\u6570 \\(y=\\frac{b}{x}\\) \u306e\u30b0\u30e9\u30d5\u4e0a\u306b\u70b9 D \u3092\uff0c\u56db\u89d2\u5f62 ABCD \u304c\u5e73\u884c\u56db\u8fba\u5f62\u306b\u306a\u308b\u3088\u3046\u306b\u3068\u308b\u3002<\/p>\n\n<p>\u305f\u3060\u3057\uff0c\u70b9 C \u306e \\(x\\) \u5ea7\u6a19\u306f\u6b63\uff0c\u70b9 D \u306e \\(x\\) \u5ea7\u6a19\u306f\u8ca0\u3068\u3057\uff0c\\(b&gt;0\\) \u3068\u3059\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u3068\u304d\uff0c\u6b21\u306e\u300c\u3066\u300d\u300c\u3068\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<p>\\(\\triangle\\text{OCD}\\) \u306e\u9762\u7a4d\u304c \\(24 \\text{ cm}^2\\) \u306e\u3068\u304d\uff0c\\(b=\\) \uff08\\(\\text{\u3066}\\), \\(\\text{\u3068}\\)\uff09 \u3067\u3042\u308b\u3002<\/p>\n\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.44.36.png\" alt=\"\u95a2\u6570 y=ax^2 \u3068 y=b\/x \u306e\u30b0\u30e9\u30d5\u3068\u70b9 A, B, C, D\">\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff083\uff09<span class=\"masked-text\" data-memorizer-key=\"c74d97b01eae257e44aa9d5bade97baf\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-4\">\uff13<\/h2>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\u4e0b\u306e\u56f3\u306e\u3088\u3046\u306b\uff0c\u7dda\u5206AB\u3092\u76f4\u5f84\u3068\u3059\u308b\u534a\u5186O\u304c\u3042\u308b\u3002AB\u4e0a\u306b\uff0c\u2220AOC\u304c\u92ed\u89d2\u3068\u306a\u308b\u3088\u3046\u306b\u70b9C\u3092\u3068\u308a\uff0c\u7dda\u5206BC\u4e0a\u306b2\u70b9B\uff0cC\u3068\u306f\u7570\u306a\u308b\u70b9D\u3092\u3068\u308b\u3002\u76f4\u7ddaAD\u3068\u5f27AB\u3068\u306e\u4ea4\u70b9\u3067\uff0c\u70b9A\u3068\u306f\u7570\u306a\u308b\u70b9\u3092E\u3068\u3057\uff0c\u70b9B\u3068\u7d50\u3076\u3002\u307e\u305f\uff0c\u2220AOC\u306e\u4e8c\u7b49\u5206\u7dda\u3068\u7dda\u5206AE\uff0cAC\u3068\u306e\u4ea4\u70b9\u3092\u305d\u308c\u305e\u308cF\uff0cG\u3068\u3059\u308b\u3002<\/p>\n\n<p>\u3053\u306e\u3068\u304d\uff0c\u6b21\u306e\uff081\uff09\uff5e\uff083\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.59.42.png\" alt=\"\u534a\u5186O\u3068\u70b9A, B, C, D, E, F, G\">\n\n<p>\uff081\uff09\u6b21\u306e\u25a1\uff08a\uff09\uff08b\uff09\uff0c\uff08c\uff09\u306b\u5165\u308b\u6700\u3082\u9069\u5f53\u306a\u3082\u306e\u3092\uff0c\u9078\u629e\u80a2\u306e\u30a2\uff5e\u30ab\u306e\u3046\u3061\u304b\u3089\u305d\u308c\u305e\u308c1\u3064\u305a\u3064\u9078\u3073\uff0c\u7b26\u53f7\u3067\u7b54\u3048\u306a\u3055\u3044\u3002<\/p>\n\n<p>\u7dda\u5206OA\u3068\u7dda\u5206\uff08a\uff09\u306f\uff0c\u534a\u5186O\u306e\uff08b\uff09\u3060\u304b\u3089\u9577\u3055\u304c\u7b49\u3057\u3044\u3002<br>\n\u3088\u3063\u3066\uff0c\u25b3OCA\u306f\uff08c\uff09\u3067\u3042\u308b\u3002<\/p>\n\n<p>\u2014 \u9078\u629e\u80a2 \u2014<br>\n\u30a2 OC\u3000\u30a4 AB\u3000\u30a6 \u76f4\u5f84\u3000\u30a8 \u534a\u5f84\u3000\u30aa \u4e8c\u7b49\u8fba\u4e09\u89d2\u5f62\u3000\u30ab \u76f4\u89d2\u4e09\u89d2\u5f62<\/p>\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff081\uff09<span class=\"masked-text\" data-memorizer-key=\"70efdf2ec9b086079795c442636b55fb\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <title>\u6570\u5b66\u554f\u984c<\/title>\n<\/head>\n<body>\n    <p>(2) \u25b3GAF \u2261 \u25b3EBD \u3068\u306a\u308b\u3053\u3068\u3092\u8a3c\u660e\u3057\u306a\u3055\u3044\u3002<\/p>\n    <p>\u305f\u3060\u3057\u3001(1)\u306e\u3053\u3068\u304c\u3089\u306b\u3064\u3044\u3066\u306f\u3001\u7528\u3044\u3066\u3082\u304b\u307e\u308f\u306a\u3044\u3082\u306e\u3068\u3059\u308b\u3002<\/p>\n    <p>\u89e3\u7b54\u4f8b\u306f\u3053\u3061\u3089\u306e\u52d5\u753b\u3067\u3059<\/p>\n<iframe width=\"452\" height=\"804\" src=\"https:\/\/www.youtube.com\/embed\/gItUU61ZAYE\" title=\"\u76f8\u4f3c\u306e\u8a3c\u660e\u30002025\u5e74\u3000\u5343\u8449\u770c\u516c\u7acb\u9ad8\u6821\u5165\u8a66\u3000\u6570\u5b66\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n    <p>(3) \u6b21\u306e\u300c\u306a\u300d\uff5e\u300c\u306d\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002\n    <\/p><p>OA = CA = 6 cm, BD : DC = 1 : 2 \u3067\u3042\u308b\u3068\u304d\u3001\u25b3EBD \u306e\u9762\u7a4d\u306f<\/p>\n   <math display=\"inline\">\n        <mfrac>\n            <mrow>\n                <mi>\u306a\u306b<\/mi>\n                <mo>\u221a<\/mo>\n                <mi>\u306c<\/mi>\n            <\/mrow>\n            <mi>\u306d<\/mi>\n        <\/mfrac>\n        <mo>cm\u00b2<\/mo>\n    <\/math>\n    <br><br>\n<img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-20.59.42.png\" alt=\"\u534a\u5186O\u3068\u70b9A, B, C, D, E, F, G\">\n  \n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff082\uff09<span class=\"masked-text\" data-memorizer-key=\"6f4922f45568161a8cdf4ad2299f6d23\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-5\">\uff14<\/h2>\n\n\n\n\n<html lang=\"ja\"><head>\n    <meta charset=\"UTF-8\">\n    <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\">\n    <script src=\"https:\/\/polyfill.io\/v3\/polyfill.min.js?features=es6\"><\/script>\n    <script id=\"MathJax-script\" async src=\"https:\/\/cdn.jsdelivr.net\/npm\/mathjax@3\/es5\/tex-mml-chtml.js\"><\/script>\n    <style>\n        body { font-family: Arial, sans-serif; line-height: 1.6; padding: 20px; }\n        h1, h2 { color: #333; }\n        .problem { margin-bottom: 20px; }\n        .sub-problem { margin-left: 20px; }\n    <\/style>\n<\/head>\n<body>\n<p>\u6b21\u306e\u4f1a\u8a71\u6587\u3092\u8aad\u307f\uff0c\u4f1a\u8a71\u6587\u4e2d\u306e\u300c\u306e\u300d\uff5e\u300c\u3082\u300d\u306b\u3064\u3044\u3066\uff0c\u3042\u3068\u306e\uff081\uff09\uff5e\uff086\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002 \u305f\u3060\u3057\uff0c\u5186\u5468\u7387\u3092 \\(\\pi\\) \u3068\u3059\u308b\u3002<\/p>\n\n<section>\n    <h3 id=\"i-6\">\u2014\u4f1a\u8a71\u6587\u2014<\/h3>\n    <p>\u6559\u5e2bT\uff1a\u304a\u3046\u304e\u5f62\u3068\u5186\u9310\u3092\uff0c\u305d\u308c\u305e\u308c\u3059\u3079\u3089\u306a\u3044\u3088\u3046\u306b\u8ee2\u304c\u3057\u305f\u3068\u304d\u306b\u3064\u3044\u3066\u8003\u3048\u307e\u3057\u3087\u3046\u3002\u56f31\u306e\u592a\u7dda\u90e8\u5206\u306f\uff0c\u534a\u5f84OM\u304c10 cm\u3067\u4e2d\u5fc3\u89d2\u304c30\u5ea6\u306e\u304a\u3046\u304e\u5f62\u3092\uff0c\u76f4\u7dda \\(l\\) \u4e0a\u3067 \u3059\u3079\u3089\u306a\u3044\u3088\u3046\u306b\u8ee2\u304c\u3057\u305f\u3068\u304d\uff0c\u70b9O\u304c\u79fb\u52d5\u3057\u305f\u8de1\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002\u70b9A\uff0cB\uff0cM,N\u306f\uff0c\\(\\angle OMA=\\angle ONB=90^\\circ\\) \u3068\u306a\u308b\u70b9\u3067\u3059\u3002\u70b9C\u306f\uff0c\u76f4\u7dda \\(l\\) \u4e0a\u306b\u3042\u308a\uff0c\u304a\u3046\u304e\u5f62\u3092\u8ee2\u304c\u3057\u7d42\u308f\u3063\u305f\u5f8c\u306e\u70b9O\u306e\u4f4d\u7f6e\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n    \n    <img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-21.07.57.png\" alt=\"\u56f31: \u304a\u3046\u304e\u5f62\u3068\u76f4\u7ddal\">\n\n    <p>\u3053\u306e\u3068\u304d\uff0c\u56f31\u306e\u70b9O\u304b\u3089\u70b9C\u307e\u3067\u306e\u592a\u7dda\u90e8\u5206\u306e\u9577\u3055\u3092\u6c42\u3081\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n    \n    <p>\u751f\u5f92 S\uff1a\u307e\u305a\uff0c\u70b9O\u304b\u3089\u70b9A\u307e\u3067\u306e\u592a\u7dda\u90e8\u5206\u306e\u9577\u3055\u306f \u306e \\(\\pi \\mathrm{cm}\\) \u3067\u3059\u3002\u3053\u306e\u9577\u3055\u3068\uff0c\u70b9B\u304b\u3089\u70b9C\u307e\u3067\u306e\u592a\u7dda\u90e8\u5206\u306f\u540c\u3058\u9577\u3055\u3067\u3059\u3002<\/p>\n    \n    <p>\u6559\u5e2bT\uff1a\u305d\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n    \n    <p>\u751f\u5f92 S\uff1a\u6b21\u306b\uff0c\u70b9A\u304b\u3089\u70b9B\u307e\u3067\u306e\u592a\u7dda\u90e8\u5206\u306f\uff0c\u76f4\u7dda \\(l\\) \u304b\u3089\u306e\u8ddd\u96e2\u304c\u5e38\u306b10 cm\u3068\u306a\u308b\u306e\u3067\u7dda\u5206\u306b\u306a\u308a\u307e\u3059\u3002\u307e\u305f\uff0c\u76f4\u7dda \\(l\\) \u4e0a\u3067\u3059\u3079\u3089\u306a\u3044\u3088\u3046\u306b\u8ee2\u304c\u3057\u3066\u3044\u308b\u306e\u3067\uff0c\u7dda\u5206AB\u306e\u9577\u3055\u306f\u304a\u3046\u304e\u5f62\u306e\u5f27\u306e\u9577\u3055\u306b\u7b49\u3057\u3044\u3067\u3059\u3002\u3088\u3063\u3066\uff0c\u70b9O\u304b\u3089\u70b9C\u307e\u3067\u306e\u592a\u7dda\u90e8\u5206\u306e\u9577\u3055\u306f \\(\\frac{\\text{\u306f\u3072}}{\\text{\u3075}} \\pi \\mathrm{~cm}\\) \u3067\u3059\u3002<\/p>\n    \n    <p>\u6559\u5e2bT\uff1a\u6b63\u89e3\u3067\u3059\u3002\u3067\u306f\uff0c\u6b21\u306e\u554f\u984c\u3067\u3059\u3002<\/p>\n\n    <p>\u56f32\u306e\u3088\u3046\u306b\uff0c\u9802\u70b9D\u3001\u534a\u5f845 cm\u306e\u5186P\u3092\u5e95\u9762\u3068\u3059\u308b\u5186\u9310\u3092\uff0c\u70b9D\u3092\u4e2d\u5fc3\u3068\u3057\u3066\u5e73\u9762\u4e0a\u3067\u3059\u3079\u3089\u306a\u3044\u3088\u3046\u306b\u8ee2\u304c\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u3068\u304d\uff0c\u5186D\u306e\u4e0a\u30921\u5468\u3057\u3066\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u3082\u3069\u308b\u307e\u3067\u306b\uff0c\u5186\u9310\u306f\u3061\u3087\u3046\u30692\u56de\u8ee2\u3057\u307e\u3057\u305f\u3002<\/p>\n    \n    <img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-21.08.06.png\" alt=\"\u56f32: \u5186\u9310\">\n\n    <p>\u3053\u306e\u5186\u9310\u306e\u6bcd\u7dda\u306e\u9577\u3055\u306f\u4f55 cm \u3067\u3059\u304b\u3002<\/p>\n\n    <p>\u751f\u5f92 S\uff1a\u5186P\u306e\u5468\u306e\u9577\u3055\u3068\u5186D\u306e\u5468\u306e\u9577\u3055\u306e\u95a2\u4fc2\u304b\u3089\uff0c\u5186\u9310\u306e\u6bcd\u7dda\u306e\u9577\u3055\u306f \u3078\u307b cm \u3067\u3059\u3002<\/p>\n\n    <p>\u6559\u5e2bT\uff1a\u3059\u3070\u3089\u3057\u3044\u3067\u3059\u3002<\/p>\n\n    <p>\u307e\u305f\uff0c\u56f33\u306e\u3088\u3046\u306b\uff0c\u9802\u70b9E\u3001\u5e95\u9762\u304c\u534a\u5f84 \\(r \\mathrm{~cm}\\) \u306e\u5186Q\u3067\uff0c\u6bcd\u7dda\u306e\u9577\u3055\u304c \\(R \\mathrm{~cm}\\) \u306e\u5186\u9310\u3092\uff0c\u70b9E\u3092\u4e2d\u5fc3\u3068\u3057\u3066\u5e73\u9762\u4e0a\u3067\u3059\u3079\u3089\u306a\u3044\u3088\u3046\u306b\u8ee2\u304c\u3057\u307e\u3057\u305f\u3002\u70b9X\u306f\uff0c\u5186\u9310\u3092\u8ee2\u304c\u3059\u524d\u306e\u5186Q\u304c\u5186E\u306b\u63a5\u3057\u3066\u3044\u308b\u70b9\u3092\u8868\u3057\u3066\u3044\u307e\u3059\u3002 \\(r\\) \u3068 \\(R\\) \u306e\u5024\u3092\u5909\u3048\u306a\u304c\u3089\uff0c\u70b9X\u306e\u52d5\u304d\u3092\u8003\u3048\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n\n    <img decoding=\"async\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2025-02-20-21.08.14.png\" alt=\"\u56f33: \u5186\u9310\">\n\n    <p>\u4f8b\u3048\u3070\u3001\\(r=2, R=8\\) \u3068\u3059\u308b\u3068\u3001\u5186\u9310\u306e\u70b9X\u306f\u3001\u5186\u9310\u304c\u3061\u3087\u3046\u30694\u56de\u8ee2\u3057\u305f\u3068\u304d\u306b\u5186E\u306e\u4e0a\u30921\u5468\u3057\u3001\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u623b\u308a\u307e\u3059\u3002\u3057\u304b\u3057\u3001\\(r=9, R=24\\) \u3068\u3059\u308b\u3068\u3001\u5186\u9310\u304c\u4f55\u56de\u304b\u56de\u8ee2\u3057\u3066\u5186E \u306e\u4e0a\u30921\u5468\u3057\u305f\u3068\u304d\u3001\u5186\u9310\u306e\u70b9X\u306f\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3067\u306f\u3001\\(r=9, R=24\\) \u306e\u3068\u304d\u3001\u5186\u9310\u306e\u70b9X\u304c\u521d\u3081\u3066\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u623b\u308b\u306b\u306f\u3001\u5186\u9310\u304c\u5186E \u306e\u4e0a\u3092\u4f55\u5468\u3057\u305f\u3068\u304d\u3067\u3059\u304b\u3002<\/p>\n\n    <p>\u751f\u5f92S\uff1a\u5186E \u306e\u4e0a\u3092 \u307e \u5468\u3057\u305f\u3068\u304d\u306b\u521d\u3081\u3066\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u623b\u308a\u307e\u3059\u3002<\/p>\n\n    <p>\u6559\u5e2bT\uff1a\u6b63\u89e3\u3067\u3059\u3002\u3055\u3066\u3001\u56f33 \u306e\u5186\u9310\u306e\u70b9X \u306b\u30a4\u30f3\u30af\u3092\u3064\u3051\u3066\u3001\u70b9X \u304c\u521d\u3081\u3066\u3082\u3068\u306e\u4f4d\u7f6e\u306b\u623b\u308b\u307e\u3067\u5186\u9310\u3092\u8ee2\u304c\u3057\u305f\u3068\u3053\u308d\u3001\u70b9X \u304c\u63a5\u3057\u305f\u5186E \u306e\u5468\u4e0a\u306b\u3001\u30a4\u30f3\u30af\u306e\u8de1\u304c\u6b8b\u308a\u307e\u3057\u305f\u3002 \\(r=2, R=8\\) \u306e\u3068\u304d\u3001\u3082\u3068\u306e\u4f4d\u7f6e\u3092\u542b\u3081\u3066\u30a4\u30f3\u30af\u306e\u8de1\u306f\u5168\u90e8\u30674\u500b\u6b8b\u308a\u307e\u3057\u305f\u3002\u305d\u308c\u3067\u306f\u3001\\(r=9, R=24\\) \u306e\u3068\u304d\u3001\u30a4\u30f3\u30af\u306e\u8de1\u306f\u5168\u90e8\u3067\u4f55\u500b\u6b8b\u308a\u307e\u3059\u304b\u3002\u305f\u3060\u3057\u3001\u30a4\u30f3\u30af\u306e\u8de1\u306f\u70b9X \u304c\u63a5\u3057\u305f\u5186E \u306e\u5468\u4e0a\u306b\u5fc5\u305a\u70b9\u3068\u3057\u3066\u6b8b\u308b\u3082\u306e\u3068\u3057\u307e\u3059\u3002<\/p>\n\n    <p>\u751f\u5f92 S\uff1a\u3082\u3068\u306e\u4f4d\u7f6e\u3092\u542b\u3081\u3066\u3001\u30a4\u30f3\u30af\u306e\u8de1\u306f\u5168\u90e8\u3067 \u307f \u500b\u6b8b\u308a\u307e\u3059\u3002<\/p>\n\n    <h3 id=\"i-7\">\u554f\u3044<\/h3>\n    \n    <ol>\n        <li>\u300c\u306e\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n        <li>\u300c\u306f\u300d\uff5e\u300c\u3075\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n        <li>\u300c\u3078\u300d\u300c\u307b\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n        <li>\u300c\u307e\u308a\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n        <li>\u300c\u307f\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n        <li>\u300c\u3080\u300d\uff5e\u300c\u3082\u300d\u306b\u3042\u3066\u306f\u307e\u308b\u3082\u306e\u3092\u305d\u308c\u305e\u308c\u7b54\u3048\u306a\u3055\u3044\u3002<\/li>\n    <\/ol>\n<\/section>\n\n<\/body>\n\n\n\n\n<p>\u6b63\u89e3<\/p>\n\n\n\n<p>\uff081\uff09<span class=\"masked-text\" data-memorizer-key=\"1f0e3dad99908345f7439f8ffabdffc4\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\uff082\uff09<span class=\"masked-text\" data-memorizer-key=\"98f13708210194c475687be6106a3b84\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\uff083\uff09<span class=\"masked-text\" data-memorizer-key=\"3c59dc048e8850243be8079a5c74d079\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\uff084\uff09<span class=\"masked-text\" data-memorizer-key=\"b6d767d2f8ed5d21a44b0e5886680cb9\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\uff085\uff09<span class=\"masked-text\" data-memorizer-key=\"37693cfc748049e45d87b8c7d8b9aacd\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<p>\uff086\uff09<span class=\"masked-text\" data-memorizer-key=\"1ff1de774005f8da13f42943881c655f\"><span class=\"mask\">\u25cf\u25cf\u25cf<\/span><span class=\"original\"><\/span><\/span><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large animated shakeX\"><a href=\"https:\/\/kakomonselect.com\/\u90e8\u6d3b\u3082\u52c9\u5f37\u3082\u8ae6\u3081\u306a\u3044\uff01\u81ea\u5b85\u3067\u53f6\u3048\u308b\u3001\u5fd7\u671b\u6821\u5408\/\"><img fetchpriority=\"high\" decoding=\"async\" fetchpriority=\"high\" width=\"1024\" height=\"1024\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-1024x1024.png\" alt=\"\" class=\"wp-image-248\" srcset=\"https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-1024x1024.png 1024w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-300x300.png 300w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-150x150.png 150w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-768x768.png 768w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-940x940.png 940w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1-160x160.png 160w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/1.png 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large animated shakeX\"><a href=\"https:\/\/kakomonselect.com\/publichs-trends\/chiba\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-1024x1024.png\" alt=\"\" class=\"wp-image-249\" srcset=\"https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-1024x1024.png 1024w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-300x300.png 300w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-150x150.png 150w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-768x768.png 768w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-940x940.png 940w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3-160x160.png 160w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/3.png 1080w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large animated shakeX\"><a href=\"https:\/\/kakomonselect.com\/\u5343\u8449\u770c\u516c\u7acb\u9ad8\u6821\u5165\u8a66\u306e\u3057\u304f\u307f\/\"><img loading=\"lazy\" decoding=\"async\" width=\"1080\" height=\"1080\" src=\"http:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-1024x1024.png\" alt=\"\" class=\"wp-image-250\" srcset=\"https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-1024x1024.png 1024w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-300x300.png 300w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-150x150.png 150w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-768x768.png 768w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-940x940.png 940w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4-160x160.png 160w, https:\/\/kakomonselect.site\/wp-content\/uploads\/2025\/02\/4.png 1080w\" sizes=\"(max-width: 1080px) 100vw, 1080px\"><\/a><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p><a href=\"https:\/\/www.pref.chiba.lg.jp\/kyouiku\/shidou\/nyuushi\/koukou\/index.html\">\u5343\u8449\u770c\u6559\u80b2\u59d4\u54e1\u4f1a\u306e\u30db\u30fc\u30e0\u30da\u30fc\u30b8<\/a>\u3088\u308a\u3001\u6700\u65b0\u306e\u60c5\u5831\u304c\u5f97\u3089\u308c\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u3001\u898b\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n<\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html><\/html>\n","protected":false},"excerpt":{"rendered":"\u6700\u5f8c\u306b\u3001\u50be\u5411\u3068\u5bfe\u7b56\u30fb\u9ad8\u6821\u5165\u8a66\u306e\u3057\u304f\u307f\u306a\u3069\u3078\u306eLINK\u304c\u3042\u308a\u307e\u3059\u3002 \uff11 \u6570\u5b66\u554f\u984c\u7528\u7d19 \u554f\u984c1 \u6b21\u306e\uff081\uff09\uff5e\uff087\uff09\u306e\u554f\u3044\u306b\u7b54\u3048\u306a\u3055\u3044\u3002 \uff081\uff09\u6b21\u306e\u2460\uff5e\u2462\u306e\u8a08\u7b97\u3092\u3057\u306a\u3055\u3044\u3002 \u2460 \\(15+(-7) \\times 3\\) \u2461 \\ 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