問題詳情
20. 如圖(八),長方形ABCD中,M、N兩點分別是 
的中點,且長方形AMND分成甲、乙兩長方形,長方形MBCN分成丙、丁兩長方形。若面積比甲:乙=7:3,丙:丁=5:9,則乙:丙=?
(A)1 : 1
(B)3 : 5
(C)21 : 25
(D)27 : 35
參考答案
無參考答案
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