Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10: 9781285195698
ISBN 13: 978-1-28519-569-8

Chapter 8 - Section 8.5 - More Area Relationships in the Circle - Exercises - Page 380: 39b



Work Step by Step

s=.5(9+10+17)=18 r=$\frac{2\sqrt {s(s-a)(s-b)(s-c)}}{a+b+c}$ r=$\frac{2\sqrt {18(9)(8)(1)}}{36}$ r=$\frac{2(36)}{36}$ r=2
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