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圆柱的周长怎么算

更新时间: 2021-01-21 22:35:29     

1、圆柱的周长=底面直径xπ π的近似值为3.14。

2、公式说明:π是圆周率,约等于3.14,D是圆的直径,R是圆的半径。

3、举例:圆的直径是6米,周长C=πD=3.14×6=18.84米;圆的半径是3米,周长C=2πr=2×3.14×3=18.84米。

关键词: 圆柱 周长 怎么

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