Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

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

Answer

r=3

Work Step by Step

These 3 sides form a pythagorean triple so this is a right triangle. r=$\frac{ab}{a+b+c}$ r=$\frac{168}{56}$ r=3
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