Prealgebra (7th Edition)

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

Chapter 9 - Cumulative Review - Page 694: 15



Work Step by Step

We cut the square into 2 congruent triangles. So we can find that diagonal length of the square/hypotenuse of the triangle using the Pythagorean Theorem: $a^{2}$ +$ b^{2}$ = $c^{2}$
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