{"common":{"save":0,"post_id":"6928","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"2588","post_id":"6928","mon_id":"1159012","chapter_id":"1159024","question":"<p>M\u1ed9t mi\u1ebfng b&igrave;a h&igrave;nh ch\u1eef nh\u1eadt c&oacute; chi\u1ec1u d&agrave;i l&agrave;&nbsp;<span class=\"math-tex\">$\\dfrac{5}{2}$<\/span>&nbsp;cm v&agrave; chi\u1ec1u r\u1ed9ng l&agrave;&nbsp;<span class=\"math-tex\">$\\dfrac{3}{4}$<\/span>&nbsp;cm. T&iacute;nh di\u1ec7n t&iacute;ch c\u1ee7a mi\u1ebfng b&igrave;a.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{15}{8}$<\/span> cm&sup2;","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{15}{4}$<\/span> cm&sup2;","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{8}$<\/span> cm&sup2;","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{4}$<\/span> cm&sup2;"],"correct":"1","level":"2","hint":"","answer":"<p>Di\u1ec7n t&iacute;ch c\u1ee7a mi\u1ebfng b&igrave;a l&agrave;&nbsp;<\/p><p><span class=\"math-tex\">$\\dfrac{5}{2}\\mathbf{x}\\dfrac{3}{4}$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{5\\mathbf{x}3}{2\\mathbf{x}4}$<\/span> =&nbsp;<span class=\"math-tex\">$\\dfrac{15}{8}$<\/span>&nbsp;cm&sup2;<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>A.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{15}{8}$<\/span>&nbsp;cm&sup2;.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 03:25:07","option_type":"math","len":0},{"id":"2590","post_id":"6928","mon_id":"1159012","chapter_id":"1159024","question":"<p>M\u1ed9t h&igrave;nh vu&ocirc;ng c&oacute; c\u1ea1nh d&agrave;i&nbsp;<span class=\"math-tex\">$\\dfrac{5}{3}$<\/span>&nbsp;cm. T&iacute;nh di\u1ec7n t&iacute;ch c\u1ee7a h&igrave;nh vu&ocirc;ng \u0111&oacute;.<\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{16}$<\/span> cm&sup2;","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{10}{9}$<\/span> cm&sup2;","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{3}$<\/span> cm&sup2;","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{25}{9}$<\/span> cm&sup2;"],"correct":"4","level":"2","hint":"","answer":"<p>Di\u1ec7n t&iacute;ch c\u1ee7a h&igrave;nh vu&ocirc;ng l&agrave;<\/p><p><span class=\"math-tex\">$\\dfrac{5}{3}\\mathbf{x}\\dfrac{5}{3}$<\/span>&nbsp;=&nbsp;<span class=\"math-tex\">$\\dfrac{5\\mathbf{x}5}{3\\mathbf{x}3}$<\/span> =&nbsp;<span class=\"math-tex\">$\\dfrac{25}{9}$<\/span>&nbsp;cm&sup2;.<\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>D.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{25}{9}$<\/span>&nbsp;cm&sup2;.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 03:28:14","option_type":"math","len":0},{"id":"2592","post_id":"6928","mon_id":"1159012","chapter_id":"1159024","question":"<p><span class=\"math-tex\">$\\dfrac{3}{4}\\mathbf{x}\\dfrac{5}{10}$<\/span>&nbsp;=&nbsp;&lt;input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/&gt;&lt;\/p>","options":["<strong>A.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{4}$<\/span>","<strong>B.<\/strong> <span class=\"math-tex\">$\\dfrac{3}{8}$<\/span>","<strong>C.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{8}$<\/span>","<strong>D.<\/strong> <span class=\"math-tex\">$\\dfrac{9}{4}$<\/span>"],"correct":"2","level":"2","hint":"","answer":"<p><span class=\"math-tex\">$\\dfrac{3}{4}\\mathbf{x}\\dfrac{5}{10}=\\dfrac{3}{4}\\mathbf{x}\\dfrac{1}{2}$<\/span>&nbsp;<span class=\"math-tex\">$=\\dfrac{3\\mathbf{x}1}{4\\mathbf{x}2}$<\/span>&nbsp;<span class=\"math-tex\">$=\\dfrac{3}{8}$<\/span><\/p><p>Ch\u1ecdn&nbsp;<span style=\"color:#16a085;\"><strong>B.<\/strong>&nbsp;<span class=\"math-tex\">$\\dfrac{3}{8}$<\/span>.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2024-02-11 03:31:48","option_type":"math","len":0}]}