Answer
150 $cm^{2}$
Work Step by Step
We use the formula for the area of a trapezoid to obtain:
A=$\frac{1}{2}$h($b_{1}$+$b_{2}$)
A=$\frac{1}{2}$(10)(12+18)
A=$\frac{1}{2}$(10)(30)
A=150
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 10 - Area - 10-2 Areas of Trapezoids, Rhombuses, and Kites - Practice and Problem-Solving Exercises - Page 626: 14
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