#### Answer

y=$4\sqrt 5$ feet.

#### Work Step by Step

The equation for the area of this figure is $(\frac{y\times y}{2})+(y\times y) = 120$.
Solving for $y$ yields $y=\sqrt {(\frac{2}{3}) \times 120}=\sqrt {80}=4\sqrt 5$ feet.

Published by
Brooks Cole

ISBN 10:
1305115546

ISBN 13:
978-1-30511-554-5

y=$4\sqrt 5$ feet.

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