Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 9 - Review: 26

Answer

189 square yards.

Work Step by Step

This quadrilateral has two pairs of parallel sides, therefore this is a paralellogram. The area of a parallelogram can be calculated as: $T=b\times h$, where b is the length of one side and h is the height. $T=21\times 9=189$ square yards.
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