Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 10 - Quadratic Equations - 10.1 - Quadratic Equations - Problem Set 10.1 - Page 444: 82

Answer

20.8 cm

Work Step by Step

First, we must find the length of the diagonal along the bottom of the cube: $ a^2 + b^2 = c^2 \\ c = \sqrt{a^2 + b^2} \\ c = \sqrt{12^2 + 12^2} =16.97$ We now find the length of the diagonal from the lower to the upper corner: $ c = \sqrt{a^2 + b^2} \\ c = \sqrt{12^2 + 16.97^2} = 20.8$
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