Answer
3.8 in
Work Step by Step
r$^2$=12$^2$-(3r)$^2$
10r$^2$=144
r$^2$=14.4
r=$\sqrt {14.4}$
r$\approx$3.8
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 9 - Section 9.3 - Cylinders and Cones - Exercises - Page 431: 18
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
