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九年级圆经典题30|垂直于弦的直径被分为1:5，弦长为10，求圆半径
九年级圆经典题30|垂直于弦的直径被分为1:5，弦长为10，求圆半径
九年级数学《圆》经典高频考题专题培优提升+解题方法和技巧传授33/109
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