#### Answer

8 ft

#### Work Step by Step

Find the total length of the first 3 pieces.
$l=4+5+7=16$
Subtract the total of the 3 pieces from the original length to find the length of the remaining piece.
$l=24-16=8$

Published by
Brooks Cole

ISBN 10:
1285199197

ISBN 13:
978-1-28519-919-1

8 ft

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