Answer
905
Work Step by Step
We find the area of the driveway:
$A = \pi(30^2 - 18^2)(1/2) = 905$
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 8 - Review Exercises - Page 400: 40a
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