Elementary Geometry for College Students (6th Edition)

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

Chapter 8 - Section 8.4 - Circumference and Area of a Circle - Exercises - Page 373: 15

Answer

l $\approx$ 7.33 in

Work Step by Step

The central angle corresponding to a circular brake shoe measures 60° We need to find out the length of curved surface of the brake shoe if the length of radius is 7 in. In a circle whose circumference is c, the length l of an arc whose degree measure is m is given by l =$\frac{m}{360}$ * c c = 2*$\pi$ * r =2 * $\frac{22}{7}$ * 7 = 44 in m=60° l=$\frac{60}{360}$ * 44 = 7.33 in
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.