# Chapter 10 - Area - Mid-Chapter Quiz: 9

135 $in^{2}$

#### Work Step by Step

The formula for the area of a trapezoid is A=$\frac{1}{2}$h($b_{1}$+$b_{2}$) A=$\frac{1}{2}$h($b_{1}$+$b_{2}$) A=$\frac{1}{2}$9(12+18) A=$\frac{1}{2}$(9)(30) A=135

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