{"id":125648,"date":"2025-11-03T11:55:14","date_gmt":"2025-11-03T02:55:14","guid":{"rendered":"https:\/\/adtechmanagement.com\/minnadepr-column\/?p=125648"},"modified":"2025-11-03T11:55:29","modified_gmt":"2025-11-03T02:55:29","slug":"diameter-meaning-2","status":"publish","type":"post","link":"https:\/\/adtechmanagement.com\/minnadepr-column\/2025\/11\/03\/diameter-meaning-2\/","title":{"rendered":"\u76f4\u5f84\u3068\u306f\uff5c\u610f\u5473\u30fb\u8a08\u7b97\u65b9\u6cd5\u30fb\u65e5\u5e38\u3067\u306e\u6d3b\u7528\u4f8b\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

\u76f4\u5f84\u306f\u3001\u5186\u3084\u7403\u4f53\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u57fa\u672c\u7684\u304b\u3064\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u65e5\u5e38\u751f\u6d3b\u3084\u7406\u79d1\u3001\u6570\u5b66\u3001\u5de5\u5b66\u306e\u5206\u91ce\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u767b\u5834\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u76f4\u5f84\u306e\u610f\u5473\u3084\u8a08\u7b97\u65b9\u6cd5\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u4eba\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u76f4\u5f84\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u95a2\u9023\u3059\u308b\u7528\u8a9e\u3001\u65e5\u5e38\u3067\u306e\u6d3b\u7528\u4f8b\u307e\u3067\u8a73\u3057\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

1. \u76f4\u5f84\u306e\u57fa\u672c\u7684\u306a\u610f\u5473<\/h2>\n

1-1. \u76f4\u5f84\u306e\u5b9a\u7fa9<\/h3>\n

\u76f4\u5f84\u3068\u306f\u3001\u5186\u3084\u7403\u306e\u4e2d\u5fc3\u3092\u901a\u308b\u7dda\u5206\u3067\u3001\u5186\u5468\u4e0a\u306e2\u70b9\u3092\u7d50\u3076\u6700\u9577\u306e\u8ddd\u96e2\u3092\u6307\u3057\u307e\u3059\u3002\u5186\u306b\u304a\u3044\u3066\u306f\u534a\u5f84\u306e2\u500d\u306e\u9577\u3055\u3067\u8868\u3055\u308c\u3001\u7403\u306b\u304a\u3044\u3066\u3082\u540c\u69d8\u306b\u4e2d\u5fc3\u3092\u901a\u308b\u6700\u9577\u306e\u8ddd\u96e2\u3092\u610f\u5473\u3057\u307e\u3059\u3002 <\/p>\n

1-2. \u76f4\u5f84\u3068\u534a\u5f84\u306e\u95a2\u4fc2<\/h3>\n

\u76f4\u5f84 \\(d\\) \u306f\u534a\u5f84 \\(r\\) \u306e2\u500d\u3067\u8868\u3055\u308c\u307e\u3059\u3002
\n\\[
\nd = 2r
\n\\]\n\u3053\u306e\u95a2\u4fc2\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u5186\u3084\u7403\u306e\u9762\u7a4d\u30fb\u4f53\u7a4d\u306e\u8a08\u7b97\u3082\u30b9\u30e0\u30fc\u30ba\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n

1-3. \u82f1\u8a9e\u3067\u306e\u8868\u73fe<\/h3>\n

\u82f1\u8a9e\u3067\u306f\u300cdiameter\u300d\u3068\u547c\u3070\u308c\u3001\u6570\u5b66\u3084\u7269\u7406\u3001\u5de5\u5b66\u306e\u5206\u91ce\u3067\u3082\u5171\u901a\u3057\u3066\u4f7f\u7528\u3055\u308c\u308b\u57fa\u672c\u7528\u8a9e\u3067\u3059\u3002 <\/p>\n

2. \u76f4\u5f84\u306e\u8a08\u7b97\u65b9\u6cd5<\/h2>\n

2-1. \u5186\u306e\u76f4\u5f84\u3092\u6c42\u3081\u308b\u65b9\u6cd5<\/h3>\n

\u5186\u306e\u76f4\u5f84\u306f\u3001\u4e2d\u5fc3\u304b\u3089\u5186\u5468\u307e\u3067\u306e\u8ddd\u96e2\u3067\u3042\u308b\u534a\u5f84\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306b\u6c42\u3081\u3089\u308c\u307e\u3059\u3002
\n\\[
\n\u76f4\u5f84 = \u534a\u5f84 \\times 2
\n\\]\n\u4f8b\u3048\u3070\u3001\u534a\u5f84\u304c5cm\u306e\u5186\u306e\u5834\u5408\u3001\u76f4\u5f84\u306f10cm\u3068\u306a\u308a\u307e\u3059\u3002 <\/p>\n

2-2. \u5186\u5468\u304b\u3089\u76f4\u5f84\u3092\u6c42\u3081\u308b\u65b9\u6cd5<\/h3>\n

\u5186\u5468\u306e\u9577\u3055 \\(C\\) \u304c\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u76f4\u5f84\u306f\u6b21\u306e\u516c\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002
\n\\[
\nd = \\frac{C}{\\pi}
\n\\]\n\u5186\u5468\u304c31.4cm\u3067\u3042\u308c\u3070\u3001\u76f4\u5f84\u306f\u7d0410cm\u3068\u306a\u308a\u307e\u3059\uff08\\(\\pi \\approx 3.14\\)\uff09\u3002 <\/p>\n

2-3. \u9762\u7a4d\u304b\u3089\u76f4\u5f84\u3092\u6c42\u3081\u308b\u65b9\u6cd5<\/h3>\n

\u5186\u306e\u9762\u7a4d \\(A\\) \u304c\u5206\u304b\u3063\u3066\u3044\u308b\u5834\u5408\u3001\u76f4\u5f84\u306f\u6b21\u306e\u516c\u5f0f\u3067\u6c42\u3081\u3089\u308c\u307e\u3059\u3002
\n\\[
\nd = 2 \\sqrt{\\frac{A}{\\pi}}
\n\\]\n\u9762\u7a4d\u304c78.5cm\u00b2\u306e\u5186\u306e\u5834\u5408\u3001\u76f4\u5f84\u306f\u7d0410cm\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n

3. \u76f4\u5f84\u306e\u5fdc\u7528\u4f8b<\/h2>\n

3-1. \u65e5\u5e38\u751f\u6d3b\u3067\u306e\u5229\u7528<\/h3>\n

\u76f4\u5f84\u306f\u65e5\u5e38\u751f\u6d3b\u306e\u591a\u304f\u306e\u5834\u9762\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30d4\u30b6\u306e\u30b5\u30a4\u30ba\u3001\u8eca\u8f2a\u306e\u5927\u304d\u3055\u3001\u7f36\u3084\u30dc\u30fc\u30eb\u306e\u30b5\u30a4\u30ba\u306a\u3069\u3067\u3059\u3002\u6b63\u78ba\u306b\u628a\u63e1\u3059\u308b\u3053\u3068\u3067\u3001\u8cfc\u5165\u3084\u8a2d\u8a08\u3001\u6bd4\u8f03\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n

3-2. \u5de5\u5b66\u30fb\u5efa\u7bc9\u5206\u91ce\u3067\u306e\u5fdc\u7528<\/h3>\n

\u5de5\u5b66\u3084\u5efa\u7bc9\u3067\u306f\u3001\u30d1\u30a4\u30d7\u3001\u306d\u3058\u3001\u30dc\u30eb\u30c8\u3001\u8eca\u8f2a\u3001\u30c9\u30e9\u30e0\u306a\u3069\u306e\u76f4\u5f84\u3092\u6b63\u78ba\u306b\u6e2c\u5b9a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u76f4\u5f84\u306f\u3001\u8a2d\u8a08\u3084\u88fd\u9020\u3001\u54c1\u8cea\u7ba1\u7406\u306b\u304a\u3044\u3066\u6b20\u304b\u305b\u306a\u3044\u6307\u6a19\u3068\u306a\u308a\u307e\u3059\u3002 <\/p>\n

3-3. \u7406\u79d1\u3084\u6570\u5b66\u3067\u306e\u6d3b\u7528<\/h3>\n

\u7406\u79d1\u3084\u6570\u5b66\u306e\u554f\u984c\u3067\u306f\u3001\u5186\u3084\u7403\u306e\u9762\u7a4d\u3001\u4f53\u7a4d\u3001\u5186\u5468\u306e\u8a08\u7b97\u306b\u76f4\u5f84\u304c\u6d3b\u7528\u3055\u308c\u307e\u3059\u3002\u7403\u306e\u4f53\u7a4d \\(V\\) \u306f\u3001\u76f4\u5f84 \\(d\\) \u3092\u4f7f\u3063\u3066\u6b21\u306e\u3088\u3046\u306b\u8868\u305b\u307e\u3059\u3002
\n\\[
\nV = \\frac{4}{3} \\pi \\left(\\frac{d}{2}\\right)^3
\n\\]\n\u307e\u305f\u3001\u5186\u306e\u9762\u7a4d\u3092\u6c42\u3081\u308b\u969b\u306b\u3082\u76f4\u5f84\u3092\u534a\u5f84\u306b\u63db\u7b97\u3057\u3066\u8a08\u7b97\u3059\u308b\u3053\u3068\u304c\u4e00\u822c\u7684\u3067\u3059\u3002 <\/p>\n

4. \u95a2\u9023\u3059\u308b\u7528\u8a9e\u3068\u6ce8\u610f\u70b9<\/h2>\n

4-1. \u534a\u5f84\u3068\u306e\u6df7\u540c\u306b\u6ce8\u610f<\/h3>\n

\u76f4\u5f84\u306f\u534a\u5f84\u306e2\u500d\u3067\u3059\u304c\u3001\u521d\u5fc3\u8005\u306f\u3057\u3070\u3057\u3070\u6df7\u540c\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u554f\u984c\u6587\u3084\u6e2c\u5b9a\u306e\u969b\u306b\u306f\u3001\u3069\u3061\u3089\u306e\u9577\u3055\u3092\u6c42\u3081\u3066\u3044\u308b\u306e\u304b\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002 <\/p>\n

4-2. \u7403\u3068\u5186\u3067\u306e\u76f4\u5f84\u306e\u9055\u3044<\/h3>\n

\u5186\u3068\u7403\u3067\u306f\u76f4\u5f84\u306e\u6982\u5ff5\u306f\u540c\u3058\u3067\u3059\u304c\u3001\u7403\u3067\u306f\u4e09\u6b21\u5143\u3067\u6700\u9577\u8ddd\u96e2\u3092\u6307\u3059\u305f\u3081\u3001\u4f53\u7a4d\u3084\u8868\u9762\u7a4d\u306e\u8a08\u7b97\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002 <\/p>\n

4-3. \u5c0f\u6570\u3084\u5358\u4f4d\u306e\u53d6\u308a\u6271\u3044<\/h3>\n

\u76f4\u5f84\u3092\u6e2c\u5b9a\u30fb\u8a08\u7b97\u3059\u308b\u969b\u306f\u3001\u5358\u4f4d\u306e\u63db\u7b97\u3084\u5c0f\u6570\u70b9\u4ee5\u4e0b\u306e\u7cbe\u5ea6\u306b\u3082\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001mm\u5358\u4f4d\u3067\u6e2c\u3063\u305f\u76f4\u5f84\u3092cm\u3084m\u306b\u63db\u7b97\u3059\u308b\u5834\u5408\u306f\u6b63\u78ba\u306b\u5909\u63db\u3057\u307e\u3057\u3087\u3046\u3002 <\/p>\n

5. \u76f4\u5f84\u3092\u7528\u3044\u305f\u8a08\u7b97\u306e\u5b9f\u4f8b<\/h2>\n

5-1. \u5186\u306e\u9762\u7a4d\u8a08\u7b97<\/h3>\n

\u534a\u5f84\u304c7cm\u306e\u5186\u306e\u9762\u7a4d\u306f
\n\\[
\nA = \\pi r^2 = 3.14 \\times 7^2 \\approx 153.86 \\text{cm\u00b2}
\n\\]\n\u76f4\u5f84\u3092\u4f7f\u3046\u5834\u5408\u306f\u534a\u5f84\u306b\u63db\u7b97\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002 <\/p>\n

5-2. \u5186\u5468\u8a08\u7b97<\/h3>\n

\u76f4\u5f84\u304c12cm\u306e\u5186\u306e\u5186\u5468\u306f
\n\\[
\nC = \\pi d = 3.14 \\times 12 \\approx 37.68 \\text{cm}
\n\\] <\/p>\n

5-3. \u7403\u306e\u4f53\u7a4d\u8a08\u7b97<\/h3>\n

\u76f4\u5f84\u304c10cm\u306e\u7403\u306e\u4f53\u7a4d\u306f
\n\\[
\nV = \\frac{4}{3} \\pi \\left(\\frac{10}{2}\\right)^3 = \\frac{4}{3} \\pi 5^3 \\approx 523.33 \\text{cm\u00b3}
\n\\]\n\u76f4\u5f84\u3092\u534a\u5f84\u306b\u63db\u7b97\u3057\u3066\u8a08\u7b97\u3059\u308b\u3053\u3068\u3067\u6b63\u78ba\u306b\u6c42\u3081\u3089\u308c\u307e\u3059\u3002 <\/p>\n

6. \u307e\u3068\u3081\uff1a\u76f4\u5f84\u306e\u7406\u89e3\u3068\u6d3b\u7528\u6cd5<\/h2>\n

\u76f4\u5f84\u306f\u5186\u3084\u7403\u306e\u4e2d\u5fc3\u3092\u901a\u308b\u6700\u9577\u306e\u7dda\u5206\u3067\u3042\u308a\u3001\u534a\u5f84\u3068\u306e\u95a2\u4fc2\u3084\u8a08\u7b97\u65b9\u6cd5\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u3067\u3001\u65e5\u5e38\u751f\u6d3b\u3001\u5de5\u5b66\u3001\u5efa\u7bc9\u3001\u7406\u79d1\u30fb\u6570\u5b66\u306e\u5206\u91ce\u3067\u6b63\u78ba\u306b\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002\u5186\u5468\u3084\u9762\u7a4d\u3001\u4f53\u7a4d\u306e\u8a08\u7b97\u306b\u4e0d\u53ef\u6b20\u306a\u6982\u5ff5\u3067\u3042\u308a\u3001\u5358\u4f4d\u3084\u5c0f\u6570\u70b9\u306e\u53d6\u308a\u6271\u3044\u306b\u3082\u6ce8\u610f\u3059\u308b\u3053\u3068\u3067\u3001\u8aa4\u5dee\u306e\u306a\u3044\u6e2c\u5b9a\u3084\u8a08\u7b97\u304c\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002\u76f4\u5f84\u306e\u57fa\u672c\u3092\u62bc\u3055\u3048\u308b\u3053\u3068\u3067\u3001\u5e45\u5e83\u3044\u5834\u9762\u3067\u306e\u5fdc\u7528\u529b\u3092\u9ad8\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u76f4\u5f84\u306f\u3001\u5186\u3084\u7403\u4f53\u306b\u304a\u3044\u3066\u975e\u5e38\u306b\u57fa\u672c\u7684\u304b\u3064\u91cd\u8981\u306a\u6982\u5ff5\u3067\u3059\u3002\u65e5\u5e38\u751f\u6d3b\u3084\u7406\u79d1\u3001\u6570\u5b66\u3001\u5de5\u5b66\u306e\u5206\u91ce\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5834\u9762\u3067\u767b\u5834\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u76f4\u5f84\u306e\u610f\u5473\u3084\u8a08\u7b97\u65b9\u6cd5\u3092\u6b63\u78ba\u306b\u7406\u89e3\u3057\u3066\u3044\u306a\u3044\u4eba\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u672c\u8a18\u4e8b\u3067\u306f\u3001\u76f4\u5f84\u306e\u5b9a\u7fa9\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u95a2\u9023\u3059\u308b\u7528\u8a9e\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":"","footnotes":""},"categories":[33],"tags":[],"class_list":["post-125648","post","type-post","status-publish","format-standard","hentry","category-business"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/125648","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/comments?post=125648"}],"version-history":[{"count":1,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/125648\/revisions"}],"predecessor-version":[{"id":125649,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/125648\/revisions\/125649"}],"wp:attachment":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/media?parent=125648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/categories?post=125648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/tags?post=125648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}