#### Answer

$8.94$ (approximately)

#### Work Step by Step

Apply Pythagorean theorem.
$c^2=a^2+b^2$
Plug $a=4 ft$ and $b= 8 ft$.
We have $c^2=16+64$
or, $c^2=80$
or, $c=\sqrt {80}$
or, $c=4\sqrt 5$
or $c=8.94$ (approximately)

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Published by
Pearson

ISBN 10:
0-13417-894-7

ISBN 13:
978-0-13417-894-3

$8.94$ (approximately)

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