Answer
DE=$\sqrt {73}$$\approx$8.5
Work Step by Step
AS=TE=3
DE$^{2}$=TE$^{2}$+TD$^{2}$
DE$^{2}$=9+64
DE$^{2}$=73
DE=$\sqrt {73}$$\approx$8.5
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 4 - Section 4.4 - The Trapezoid - Exercises - Page 210: 37d
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