选择题
2018 AMC 8 Problem 22: Square with Diagonal and Midpoint
Point E is the midpoint of side CD in square ABCD, and BE meets diagonal AC at F. The area of quadrilateral AFED is 45. What is the area of ABCD?
2018 AMC 8 第22题：对角线和中点的平方
点E是正方形ABCD的边CD的中点，BE与对角线AC交于F。四边形AFED的面积是45。ABCD的面积是多少
A.
100
B.
108
C.
120
D.
135
E.
144