Answer
12
Work Step by Step
$\sqrt {144}$ means that we are supposed to find what number times itself equals 144. We recall that 12 times 12 is 144, so $\sqrt {144}$ is 12:
$\sqrt {144} =\sqrt {12^{2}} = 12$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 1 - Foundations for Algebra - Mid-Chapter Quiz - Page 29: 6
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