Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 1 - Review - Page 100: 9


$340\ cm^2$

Work Step by Step

Find the area of each rectangular part of the figure. The top rectangle is 5cm wide and (22-10) cm high. The bottom rectangle is 28 cm wide and 10 cm high. $a=(5\times12)+(28\times10)=60+280=340$
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