## Elementary Geometry for College Students (7th Edition)

Published by Cengage

# Chapter 5 - Review Exercises - Page 275: 41

11 km apart

#### Work Step by Step

x$^2$=13$^2$-12$^2$ x$^2$=25 x=5 y$^2$=20$^2$-12$^2$ y$^2$=400-144=256 y=16 y-x=16-5=11

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