Prealgebra (7th Edition)

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

Chapter 5 - Section 5.2 - Adding and Subtracting Decimals - Exercise Set: 78

Answer

17.78 in

Work Step by Step

The perimeter of a triangle is the sum of the lengths of the 3 sides. $4.2+5.78+7.8=17.78$
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