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.
$l=24-16=8$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 1 - Section 1.1 - Review of Basic Operations - Exercise - Page 9: 16
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