Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 10 - Geometry - Chapter Summary, Review, and Test - Review Exercises - Page 681: 25

Answer

The length of the wires attached to the pole is \[\text{12 yd}\].

Work Step by Step

The length of the base of the pole is 5 yd and the length of the hypotenuse is 13 yd. The length of wires attached to the pole can be calculated by using the Pythagorean Theorem. Compute the length of the wires attached to the pole using the equation as shown below: \[\begin{align} & {{a}^{2}}+{{b}^{2}}={{c}^{2}} \\ & {{5}^{2}}+{{b}^{2}}={{13}^{2}} \\ & 25+{{b}^{2}}=169 \\ & {{b}^{2}}=169-25 \end{align}\] \[\begin{align} & {{b}^{2}}=144 \\ & b=\sqrt{144} \\ & b=\text{12 yd} \end{align}\] Hence, the length of the wires attached to the pole is \[\text{12 yd}\].
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