Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 1 - Foundations for Algebra - 1-3 Real Numbers and the Number Line - Standardized Test Prep: 72

Answer

B: 15 in

Work Step by Step

Because the formula for the area of a square is $s^{2}$, where $s$ is the length of a side, the equation is $s^{2}=225$. Square root both sides to get $s=15$.
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