Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-8 Perimeter, Circumference, and Area - Practice and Problem-Solving Exercises - Page 67: 57



Work Step by Step

Use the formula for the area of a rectangle: $A=bh=(\frac{2a}{5b})(\frac{3b}{8})=\frac{6ab}{40b}=\frac{(/\!\!2)(3)a/\!\!b}{(/\!\!2)(20)/\!\!b}=\frac{3a}{20}$
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