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85问答库 > 你好，我想请教你，高80厘米直径40厘米能装多少公斤水？谢谢！

你好，我想请教你，高80厘米直径40厘米能装多少公斤水？谢谢！

2025-03-15 14:13:06

推荐回答（2个）

回答1：

解：已知：直径D=40厘米，半径R=40/2=20（厘米），高H=80厘米，
体积V=πR2H=3.14X20X20X80=100480（立方厘米）；
水的密度为1克/立方厘米，则有：100480X1=100480（克）=100.48公斤
答：高80厘米，直径40厘米的圆柱体能装100.48公斤水

回答2：

如果是圆柱体，先求体积
v=3.14乘以（40除以2）的平方，再乘以80
=100480立方厘米
m=密度乘以v=1x100480=100480千克

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