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一只水杯,从里面量底面直径是8厘米,高15厘米。一桶纯净水净含量18.9升,可以倒满多少杯呢
一只水杯,从里面量底面直径是8厘米,高15厘米。一桶纯净水净含量18.9升,可以倒满多少杯呢
发布时间:2020-08-20 13:07:25
如上
网友回答
先算底面积,
s=π(d/2)2
=3.14x(8/4)2
=50.24(cm2)
L杯=sh
=50.24x15
=753.6(cm3)
=0.7536(dm3)
L桶=18.9升=18.9(dm3)
L桶/L杯=18.9/0.7536
≈25(桶)
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