1.(1)任何圆的周长除以它直径的商都是一个固定的数,我们把它叫做( ),用字母( )表示.( 2)π是一个( )小数,我们在计算时通常取它的两位小数近似值,即π≈( ).2.求下面圆的周长.(1)d
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![1.(1)任何圆的周长除以它直径的商都是一个固定的数,我们把它叫做( ),用字母( )表示.( 2)π是一个( )小数,我们在计算时通常取它的两位小数近似值,即π≈( ).2.求下面圆的周长.(1)d](/uploads/image/z/2774710-46-0.jpg?t=1.%281%29%E4%BB%BB%E4%BD%95%E5%9C%86%E7%9A%84%E5%91%A8%E9%95%BF%E9%99%A4%E4%BB%A5%E5%AE%83%E7%9B%B4%E5%BE%84%E7%9A%84%E5%95%86%E9%83%BD%E6%98%AF%E4%B8%80%E4%B8%AA%E5%9B%BA%E5%AE%9A%E7%9A%84%E6%95%B0%2C%E6%88%91%E4%BB%AC%E6%8A%8A%E5%AE%83%E5%8F%AB%E5%81%9A%EF%BC%88+%EF%BC%89%2C%E7%94%A8%E5%AD%97%E6%AF%8D%EF%BC%88+%EF%BC%89%E8%A1%A8%E7%A4%BA.%28+2%29%CF%80%E6%98%AF%E4%B8%80%E4%B8%AA%EF%BC%88+%EF%BC%89%E5%B0%8F%E6%95%B0%2C%E6%88%91%E4%BB%AC%E5%9C%A8%E8%AE%A1%E7%AE%97%E6%97%B6%E9%80%9A%E5%B8%B8%E5%8F%96%E5%AE%83%E7%9A%84%E4%B8%A4%E4%BD%8D%E5%B0%8F%E6%95%B0%E8%BF%91%E4%BC%BC%E5%80%BC%2C%E5%8D%B3%CF%80%E2%89%88%EF%BC%88+%EF%BC%89.2.%E6%B1%82%E4%B8%8B%E9%9D%A2%E5%9C%86%E7%9A%84%E5%91%A8%E9%95%BF.%EF%BC%881%EF%BC%89d)
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