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圆周长怎么计算
更新时间: 2021-05-31 17:04:03  

1、圆周长计算公式:C=2πr、C=πd。

2、圆周长是指绕圆一周的长度,在圆中内接一个正n边形,边长设为an,正边形的周长为n×an,当n不断增大的时候,正边形的周长不断接近圆的周长C的数学现象,即:n趋近于无穷,C=n×an。

关键词: 圆周 怎么 计算

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