Answer
19 in
Work Step by Step
The perimeter is the sum of the lengths of the sides.
$3+7+9=10+9=19$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 5 - Cumulative Review - Page 407: 6
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