Elementary Geometry for College Students (5th Edition)

by Alexander, Daniel C.; Koeberlein, Geralyn M.

Published by Brooks Cole

ISBN 10: 1439047901

ISBN 13: 978-1-43904-790-3

Chapter 5 - Section 5.4 - The Pythagorean Theorem - Exercises - Page 251: 15

Answer

15 ft

Work Step by Step

Using Pythagoras theorem $25\times 25 = base\times base + 20\times 20$ $625= base\times base +400$ $base\times base =625-400$ $base\times base =225$ base = 15 ft

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