{"common":{"save":0,"post_id":"8405","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"4539","post_id":"8405","mon_id":"1159414","chapter_id":"1159497","question":"<p>Tính di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 5 dm, chi\u1ec1u r\u1ed9ng 4 dm, chi\u1ec1u cao 3 dm.<\/p>","options":["<strong>A.<\/strong> 45 dm²","<strong>B.<\/strong> 18 dm²","<strong>C.<\/strong> 54 dm²","<strong>D.<\/strong> 27 dm²"],"correct":"3","level":"1","hint":"<p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt b\u1eb1ng chu vi \u0111áy nhân v\u1edbi chi\u1ec1u cao.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> 54 dm².<\/span><\/p><p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt là<\/p><p>(5 + 4) x 2 x 3 = 54 (dm²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 08:17:35","option_type":"txt","len":1},{"id":"4542","post_id":"8405","mon_id":"1159414","chapter_id":"1159497","question":"<p>Tính di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 3 dm, chi\u1ec1u r\u1ed9ng 2 dm, chi\u1ec1u cao 3 dm.<\/p>","options":["<strong>A.<\/strong> 30 dm²","<strong>B.<\/strong> 20 dm²","<strong>C.<\/strong> 40 dm²","<strong>D.<\/strong> 50 dm²"],"correct":"1","level":"1","hint":"<p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt b\u1eb1ng chu vi \u0111áy nhân v\u1edbi chi\u1ec1u cao.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>A.<\/strong> 30 dm².<\/span><\/p><p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt là<\/p><p>(3 + 2) x 2 x 3 = 30 (dm²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 08:20:31","option_type":"txt","len":1},{"id":"4544","post_id":"8405","mon_id":"1159414","chapter_id":"1159497","question":"<p>Tính di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt có chi\u1ec1u dài 12 cm, chi\u1ec1u r\u1ed9ng 8 cm, chi\u1ec1u cao 15 cm.<\/p>","options":["<strong>A.<\/strong> 300 cm²","<strong>B.<\/strong> 600 cm²","<strong>C.<\/strong> 400 cm²","<strong>D.<\/strong> 500 cm²"],"correct":"2","level":"1","hint":"<p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt b\u1eb1ng chu vi \u0111áy nhân v\u1edbi chi\u1ec1u cao.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> 600 cm².<\/span><\/p><p>Di\u1ec7n tích xung quanh c\u1ee7a hình h\u1ed9p ch\u1eef nh\u1eadt là<\/p><p>(12 + 8) x 2 x 15 = 600 (cm²).<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2025-02-12 08:23:24","option_type":"txt","len":1}]}
