长方体盒子(无盖)的长宽高非别是12cm,8cm,30cm,在AB中点C处有一滴蜜糖,一只小虫虫D处爬到C出去吃,最短路程是?
题目
长方体盒子(无盖)的长宽高非别是12cm,8cm,30cm,在AB中点C处有一滴蜜糖,一只小虫虫D处爬到C出去吃,最短路程是?
答案
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