Answer
A=36$\sqrt 3$$\approx$62.35 cm$^2$
Work Step by Step
h=.5s$\sqrt 3$
h=6$\sqrt 3$
A=.5bh
A=.5(12)(6$\sqrt 3$)
A=36$\sqrt 3$$\approx$62.35 cm$^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 385: 16
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