Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 5 - Section 5.4 - The Pythagorean Theorem - Exercises - Page 240: 9b



Work Step by Step

Let $b=\overline{EF}$ $12^{2}=(8\sqrt 2)^{2}+b^{2}$ $144=128+b^{2}$ Subtract 128 on both sides $16=b^{2}$ $4=b$
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