5x5x2=50
立方米的土
一个水池底面是正方形,底面边长为5米,深为2米,挖着样一个水池需挖多少立方米的土
一个水池底面是正方形,底面边长为5米,深为2米,挖着样一个水池需挖多少立方米的土
数学人气:455 ℃时间:2020-05-03 05:18:34
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