{"image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/C/Conichan/20230120/20230120143317.jpg","title":"\u03c0\uff08\u5186\u5468\u7387\uff09\u306e\u5b9a\u7fa9\u3092\u5909\u66f4\u3057\u305f\u3089\u771f\u7406\u304c\u898b\u3048\u3084\u3059\u304f\u306a\u308b\u304b\u3082\ud83d\ude38","author_name":"Conichan","description":"\u5186\u5468\u7387 \uff08\u03c0\uff09\u306e\u9055\u548c\u611f \u534a\u5f84r\u306e\u5186\u306b\u304a\u3044\u3066\u2026 \u25b6\ufe0e\u5186\u5468\u306e\u9577\u3055\u306f 2\u03c0r \u25b6\ufe0e\u5186\u306e\u9762\u7a4d\u306f \u03c0\u2022 r^2 \uff08\u03c0:\u5186\u5468\u7387\u3001r:\u534a\u5f84\u3001^:\u7d2f\u4e57\uff09 \u304b\u3088\u3046\u306b\u3001\u5186\u306b\u95a2\u308f\u308b\u516c\u5f0f\u306e\u57fa\u672c\u5358\u4f4d\u306f\u534a\u5f84\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002 \u3068\u3053\u308d\u304c\u3001\u6570\u5b66\u306e\u6839\u6e90\u7684\u306a\u8d85\u8d8a\u6570\u3067\u3042\u308b\u03c0\u306f\u3001\uff08\u5186\u5468\uff09\u00f7\uff08\u76f4\u5f84\uff09\u3068\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u534a\u5f84\u3067\u306f\u306a\u304f\u76f4\u5f84\u3068\u306e\u6bd4\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002 \u3068\u3066\u3082\u6c17\u6301\u3061\u60aa\u3044\u3067\u3059\ud83e\udd2e \u3053\u306e\u9055\u548c\u611f\u306f\u3001\u6570\u5b66\u3067\u5186\u3084\u7403\u3092\u6271\u3046\u3068\u304d\u306f\u6975\u5ea7\u6a19\u7cfb\u3092\u7528\u3044\u3066\u534a\u5f84\u306b\u76f8\u5f53\u3059\u308b\u52d5\u5f84 r \u3092\u57fa\u672c\u5358\u4f4d\u3068\u3057\u3066\u8003\u3048\u308b\u304b\u3089\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u306d\u3002 \u65b0\u2022 \u5186\u5468\u7387 By \u3092\u4f5c\u3063\u3066\u307f\u305f \u305d\u3053\u3067\u3001\u5186\u5468\u7387\u306e\u5b9a\u7fa9\u3092\u5909\u66f4\u3057\u307e\u3059\u3002 \u65b0\u3057\u3044\u5186\u5468\u7387\u306f\uff08\u5186\u5468\uff09\u00f7\uff08\u534a\u5f84\uff09\u3068\u3057\u307e\u3059\u3002\u305d\u3057\u3066\u3001\u03c0\u306b\u4ee3\u308f\u308b\u3053\u306e\u65b0\u2026","provider_url":"https://hatena.blog","version":"1.0","height":"190","width":"100%","url":"https://conichan.hatenablog.com/entry/2023/01/21/142433","categories":["\u30b2\u30fc\u30e0\u2022 \u6570\u8ad6"],"published":"2023-01-21 14:24:33","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fconichan.hatenablog.com%2Fentry%2F2023%2F01%2F21%2F142433\" title=\"\u03c0\uff08\u5186\u5468\u7387\uff09\u306e\u5b9a\u7fa9\u3092\u5909\u66f4\u3057\u305f\u3089\u771f\u7406\u304c\u898b\u3048\u3084\u3059\u304f\u306a\u308b\u304b\u3082\ud83d\ude38 - \u3053\u306b\u301c \u306e \u3056\u308c\u3054\u3068\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://conichan.hatenablog.com/","blog_title":"\u3053\u306b\u301c \u306e \u3056\u308c\u3054\u3068","provider_name":"Hatena Blog","type":"rich","author_url":"https://blog.hatena.ne.jp/Conichan/"}