与圆有关的初中计算1.正三角形ABC内接于半径为2cm的圆,则弦AB所对的弧长为(有过程,答案为4/3π和8/3π.可是我做是2/3π和4/3π)2.圆o的外切正六边形ABCDEF的面积是6根号3,求圆O内接正三角形的面
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![与圆有关的初中计算1.正三角形ABC内接于半径为2cm的圆,则弦AB所对的弧长为(有过程,答案为4/3π和8/3π.可是我做是2/3π和4/3π)2.圆o的外切正六边形ABCDEF的面积是6根号3,求圆O内接正三角形的面](/uploads/image/z/12969917-53-7.jpg?t=%E4%B8%8E%E5%9C%86%E6%9C%89%E5%85%B3%E7%9A%84%E5%88%9D%E4%B8%AD%E8%AE%A1%E7%AE%971.%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E5%86%85%E6%8E%A5%E4%BA%8E%E5%8D%8A%E5%BE%84%E4%B8%BA2cm%E7%9A%84%E5%9C%86%2C%E5%88%99%E5%BC%A6AB%E6%89%80%E5%AF%B9%E7%9A%84%E5%BC%A7%E9%95%BF%E4%B8%BA%EF%BC%88%E6%9C%89%E8%BF%87%E7%A8%8B%2C%E7%AD%94%E6%A1%88%E4%B8%BA4%2F3%CF%80%E5%92%8C8%2F3%CF%80.%E5%8F%AF%E6%98%AF%E6%88%91%E5%81%9A%E6%98%AF2%2F3%CF%80%E5%92%8C4%2F3%CF%80%EF%BC%892.%E5%9C%86o%E7%9A%84%E5%A4%96%E5%88%87%E6%AD%A3%E5%85%AD%E8%BE%B9%E5%BD%A2ABCDEF%E7%9A%84%E9%9D%A2%E7%A7%AF%E6%98%AF6%E6%A0%B9%E5%8F%B73%2C%E6%B1%82%E5%9C%86O%E5%86%85%E6%8E%A5%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E9%9D%A2)
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