已知正六边形的边长为啊,求它的内切圆与外接圆组成的圆环面积
已知正六边形的边长为啊,求它的内切圆与外接圆组成的圆环面积
数学人气:882 ℃时间:2020-05-03 06:09:33
优质解答
假设边长为A,则外接圆半径为A,面积为∏A(的平方),内切圆半径为√3/2A,面积为3/4A(的平方)∏,两者之差1/4A(的平方)∏即为圆环的面积.
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