## Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole

# Chapter 8 - Section 8.4 - Circumference and Area of a Circle - Exercises - Page 373: 21

5 to 13

#### Work Step by Step

At its minimum, N is the length of AB, so its lower limit is 5. At its maximum, AN is the length of AC. Thus, its upper limit it: $=\sqrt{12^2 + 5^2} =13$

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