Elementary Geometry for College Students (7th Edition) Clone

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Appendix A - A.2 - Formulas and Equations - Exercises - Page 546: 34

Answer

$b = 15$

Work Step by Step

$A = \frac{1}{2} \times h \times ( b + B)$ $156 = (0.5) \times (12) \times (b + 11)$ $156 = 6(b+11)$ $156 = 6b + 66$ $90 = 6b$ $b = \frac{90}{6}$ $b = 15$
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