来自华亚峰的问题
有一个长方体,它的底面是正方形,高是18cm,前后左右4个面展开后是一个正方形,求长方体的体积和表面积
有一个长方体,它的底面是正方形,高是18cm,前后左右4个面展开后是一个正方形,求长方体的体积和表面积
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2020-03-16 00:27
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鲍欣龙
由题意,得
底面边长=18÷4=4.5
所以
表面积=4.5×4.5×2＋18×18=364.5平方厘米
体积=4.5×4.5×18=364.5立方厘米
2020-03-16 00:30:26
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