Answer
BF=6$\sqrt 3$
Work Step by Step
Since ABCDEF is a regular hexagon, the diagonals shown form a 30 60 90 triangle.
CB=AB
CB=6
BF=CB$\sqrt 3$
BF=6$\sqrt 3$
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 5 - Section 5.5 - Special Right Triangles - Exercises - Page 249: 35a
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