問題詳情
27. 圖 ( 十 一 ) 為 △ABC與 圓 O的重疊情形，其中 
為 圓 O之直徑。若∠A=70°， 
，則圖中灰色區域的面積為何？
(A) 
(B) 
(C) 
(D) 
參考答案
無參考答案
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