https://bgk-photo.cdn.bcebos.com/doc/pic/item/a50f4bfbfbedab64d7446107f036afc378311ec6.jpg如图，⊙O的半径为3，OA=6，AB切⊙O于B，弦BC∥OA，连接AC，图中阴影部分的面积为______．
https://bgk-photo.cdn.bcebos.com/doc/pic/item/a50f4bfbfbedab64d7446107f036afc378311ec6.jpg如图，⊙O的半径为3，OA=6，AB切⊙O于B，弦BC∥OA，连接AC，图中阴影部分的面积为______．
发布时间：2025-05-26 08:19:23
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