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当圆柱的高是30厘米时,底面周长是多少?

更新时间: 2021-01-14 15:13:40     

圆柱的高与圆柱的底面周长是没有关系的,圆柱体底面周长公式是C=πd=2πr ,其中d为直径,r为半径,π为圆周率,从问题看,我们需要知道半径或者直径才能算出来底面周长,或者给出圆柱的体积,通过V=2πrh可得,C=2πr=V/h,就能算出来了。

关键词: 圆柱 厘米 周长 多少

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