Answer
$57.5 \ cm^2 .$
Work Step by Step
The area of a trapezoid is given by
$$ area = \frac{1}{2} (sum~ of~ parallel~bases)\times height= \frac{1}{2}(15+8)\times5=57.5 \ cm^2 .$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 12 - Test - Page 445: 3
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