Prealgebra (7th Edition)

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

Chapter 1 - Section 1.3 - Adding and Subtracting Whole Numbers, and Perimeter - Exercise Set: 52

Answer

12 cm

Work Step by Step

The perimeter is the sum of the lengths of the sides. $3+4+5=12$
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