Answer
11 units
Work Step by Step
area is 121 square inches
$a=121$
$a=side * side$
$a=s^2$
$121= s^2$
$\sqrt {121} = \sqrt {s^2}$
$s =±11$
We can't have a negative side length, so $s=11$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 6 - Section 6.7 - Quadratic Equations and Problem Solving - Exercise Set - Page 465: 7
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