Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 8 - Section 8.1 - Area and Initial Postulates - Exercises - Page 360: 28a

Answer

220 $ft^{2}$

Work Step by Step

The area of the floor space can be divided into two rectangles. Total area of the floor space = Area of the small rectangle + area of the large rectangle. Area A of rectangle whose base has length b and height has length h is given by A =bh. Area of small rectangle = bh = 10 * 10 = 100$ft^{2}$. Area of large rectangle = bh =12 * 10 = 120 $ft^{2}$. Therefore the total floor space area 100 + 120 = 220 $ft^{2}$.
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