問題詳情
25. 如圖(九)，圓 A、圓 B 的半徑分別為2，且
= 12。若作一圓 C 使得三圓的圓心在同一直線上，且圓 C 與圓 A 外切，圓 C 與圓 B 相交於兩點，則下列何者可能是圓 C 的半徑長？
(A) 3
(B) 4
(C) 5
(D) 6
參考答案
無參考答案
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