問題詳情
17.扇形半徑為 10 公分，圓心角為 120°，則此扇形的面積為何？
(A)
平方公分
(B)
π 平方公分
(C)
平方公分
(D)
π 平方公分 
參考答案
答案：B
難度：非常簡單1
統計：A(0),B(2),C(0),D(0),E(0)
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