一块长方形纸板,从四个角各剪掉一个边长为5厘米的正方形,然后沿虚线折成一个无盖的长方体盒子.这个盒子的容积是多少?
人气:426 ℃ 时间:2019-10-14 01:07:36
解答
(35-10)x(20-10)x5=1250
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