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: 12

Answer

$A$ = 100 in$^{2}$

Work Step by Step

Area of a Trapezoid: $A$ = $\frac{1}{2}$$h$($b$ + $B$) Therefore: $A$ = $\frac{1}{2}$(8 in)(9$\frac{1}{4}$ in + 15$\frac{3}{4}$ in) *Convert to decimals $A$ = (0.5)(8 in)(9.25 in + 15.75 in) $A$ = (0.5)(8 in)(25 in) $A$ = (4 in)(24 in) $A$ = 100 in$^{2}$
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