Answer
A=$\frac{693}{2}$
Work Step by Step
r=.5d
r=.5(21)=$\frac{21}{2}$
A=$\pi$r$^2$
A=$\frac{22}{7}$($\frac{21}{2}$)($\frac{21}{2}$)
A=$\frac{693}{2}$
Elementary Geometry for College Students (6th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
9781285195698
ISBN 13:
978-1-28519-569-8
Chapter 8 - Review Exercises - Page 386: 33b
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