Answer
A=27$\sqrt 3$$\approx$46.76
Work Step by Step
altitude=3a
altitude=9
s=2a$\sqrt 3$
s=6$\sqrt 3$
A=.5(9)(6$\sqrt 3$)
A=27$\sqrt 3$$\approx$46.76
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 8 - Section 8.3 - Regular Polygons and Area - Exercises - Page 376: 3b
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