Answer
$144$
Work Step by Step
When we square a number, we are multiplying the number by itself. In order to simplify $12^2$, we must multiply $12$ by itself. $12\times12=144$.
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: 3
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