选择题
2014 AMC 8 Problem 14: Rectangle and Triangle
Rectangle ABCD and right triangle DCE have the same area. They are joined to form a trapezoid, as shown. What is DE?
2014 AMC 8 第14题 ：矩形和三角形
矩形ABCD和直角三角形DCE具有相同的面积。它们结合在一起形成梯形，如图所示。什么是DE ？
A.
12
B.
13
C.
14
D.
15
E.
16