选择题
2017 AMC 8 Problem 18: Non-Convex Quadrilateral Area
In the non-convex quadrilateral ABCD, angle BCD is a right angle, AB = 12, BC = 4, CD = 3, and AD = 13. What is the area of quadrilateral ABCD?
2017 AMC 8 第18题 ：非凸四边形区域
在非凸四边形ABCD中，角度BCD为直角， AB = 12 ， BC = 4 ， CD = 3 ， AD = 13。四边形ABCD的面积是多少？
A.
12
B.
24
C.
26
D.
30
E.
36