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圆的周长用字母怎么表示
更新时间: 2020-10-31 00:00:00  

圆的周长用字母C表示,是英文字母Circumference(周长)的缩写。

圆的面积用字母S表示,是英文字母Square(面积)的缩写。

圆周长C=π*d,或者C=2*π*r,其中d是圆的直径,r是圆的半径。S=πr²或S=π*(d/2)²,π表示圆周率,r表示半径,d表示直径)。

关键词: 周长 字母 怎么 表示

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