Answer
About 7.9 in
Work Step by Step
apothem=.5s$\sqrt 3$
a=.5(6$\sqrt 3$)($\sqrt 3$)
a=9
h$^2$=l$^2$-a$^2$
h$^2$=144-81
h$^2$=63
h=$\sqrt 63$
h$\approx$7.9
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 9 - Review Exercises - Page 446: 8
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