#### Answer

10 in

#### Work Step by Step

Radius is half diameter, so
$r=20\div2=10$

Published by
Pearson

ISBN 10:
0321955048

ISBN 13:
978-0-32195-504-3

10 in

Radius is half diameter, so
$r=20\div2=10$

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.