2011 AMC 8 Problem 20

#1
Quadrilateral \(ABCD\) is a trapezoid, \(AD = 15\), \(AB = 50\), \(BC = 20\), and the altitude is \(12\). What is the area of the trapezoid?

2011amc8q20.jpg

\( \textbf{(A) }600\\\textbf{(B) }650\\\textbf{(C) }700\\\textbf{(D) }750\\\textbf{(E) }800 \)
 
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