Elementary Technical Mathematics

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

Chapter 1 - Test - Page 102: 7


$750\ m^2$

Work Step by Step

To find the total area, sum the areas of each of the rectangles that form the figure. The rectangle on top is 40 m x 10 m. $A=40\ m\times10\ m=400\ m^2$ The rectangle in the middle is 15 m x 10 m. (Subtract to find the width. $40-25=15$.) $A=15\ m\times10\ m=150\ m^2$ The rectangle on the bottom is 20 m x 10 m. $A=20\ m\times10\ m=200\ m^2$ Sum to find the total area. $400\ m^2+150\ m^2+200\ m^2=750\ m^2$
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