Answer
$225$
Work Step by Step
When we square a number, we are multiplying the number by itself. In order to simplify $15^2$, we must multiply $15$ by itself. $15\times15=225$.
Geometry: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281159
ISBN 13:
978-0-13328-115-6
Chapter 10 - Area - Get Ready! - Page 611: 4
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