Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 8 - Geometry - 8.4 Parallelograms and Trapezoids - 8.4 Exercises: 13

Answer

$A$ = 3099.6 cm$^{2}$

Work Step by Step

Area of a Trapezoid: $A$ = $\frac{1}{2}$$h$($b$ + $B$) Therefore: $A$ = $\frac{1}{2}$(42 cm)(61.4 cm + 86.2 cm) $A$ = $\frac{1}{2}$(42 cm)(147.6 cm) $A$ = (21 cm)(147.6 cm) $A$ = 3099.6 cm$^{2}$
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