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2兀等于多少

更新时间: 2020-07-07 00:00:00     

π是无限不循环小数,一般取值为3、14,故可将2π算作6、28。

圆周率是圆的周长与直径的比值,一般用希腊字母π表示,是一个在数学及物理学中普遍存在的数学常数。π也等于圆形之面积与半径平方之比。是精确计算圆周长、圆面积、球体积等几何形状的关键值。

关键词: 等于 多少

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