問題詳情
11. 如下圖，梯形ABCD 中， 
， 則 
= ？
(A) 5 : 9
(B) 4 : 11
(C) 4 : 7
(D) 5 : 16
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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