{"id":3126,"date":"2026-05-25T00:03:10","date_gmt":"2026-05-25T00:03:10","guid":{"rendered":"https:\/\/mcqacademy.com\/zh\/mcq\/circle-circumference-using-radius\/"},"modified":"2026-05-25T00:03:10","modified_gmt":"2026-05-25T00:03:10","slug":"circle-circumference-using-radius","status":"publish","type":"mcq","link":"https:\/\/mcqacademy.com\/zh\/mcq\/circle-circumference-using-radius\/","title":{"rendered":"\u5229\u7528\u534a\u5f84\u6c42\u5706\u7684\u5468\u957f"},"content":{"rendered":"<p>\u53d6 \u03c0 = 3.14\uff0c\u6c42\u534a\u5f84\u4e3a 38 \u7c73\u7684\u5706\u7684\u5468\u957f\u3002<\/p>\n<ul class=\"quiz-options\">\n<li>1444 \u7c73<\/li>\n<li>4534.16 \u7c73<\/li>\n<li>238.64 \u7c73<\/li>\n<li>119.32 \u7c73<\/li>\n<\/ul>\n","protected":false},"author":39,"featured_media":0,"comment_status":"open","ping_status":"closed","template":"","topic":[1167,1165],"subject":[1083],"education_level":[3],"class_list":["post-3126","mcq","type-mcq","status-publish","hentry","topic-circumference","topic-circle","subject-mensuration","education_level-grade-8"],"mcq_note":"\u5706\u7684\u5468\u957f\u8868\u793a\u5706\u8fb9\u754c\u4e00\u5468\u7684\u957f\u5ea6\uff0c\u516c\u5f0f\u662f C = 2\u03c0r\u3002\u6240\u4ee5 C = 2 \u00d7 3.14 \u00d7 38 = 238.64 \u7c73\u3002\u5468\u957f\u662f\u957f\u5ea6\uff0c\u7b54\u6848\u4f7f\u7528\u666e\u901a\u957f\u5ea6\u5355\u4f4d\u3002\u4e0d\u8981\u628a\u534a\u5f84\u5e73\u65b9\uff1b\u534a\u5f84\u5e73\u65b9\u7528\u4e8e\u9762\u79ef\u516c\u5f0f \u03c0r\u00b2\u3002\u56e0\u6b64\u6b63\u786e\u9009\u9879\u662f 238.64 \u7c73\u3002","mcq_options":[{"right":"no","answer":"1444 \u7c73"},{"right":"no","answer":"4534.16 \u7c73"},{"right":"yes","answer":"238.64 \u7c73"},{"right":"no","answer":"119.32 \u7c73"}],"multi_answers":"no","subject_terms":[{"id":1083,"title":"Mensuration","slug":"mensuration"}],"topic_terms":[{"id":1167,"title":"\u5468\u957f","slug":"circumference"},{"id":1165,"title":"\u5706","slug":"circle"}],"_links":{"self":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq\/3126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/mcq"}],"about":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/types\/mcq"}],"author":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/users\/39"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/comments?post=3126"}],"wp:attachment":[{"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/media?parent=3126"}],"wp:term":[{"taxonomy":"topic","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/topic?post=3126"},{"taxonomy":"subject","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/subject?post=3126"},{"taxonomy":"education_level","embeddable":true,"href":"https:\/\/mcqacademy.com\/zh\/wp-json\/wp\/v2\/education_level?post=3126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}