Elementary Geometry for College Students (7th Edition)

Published by Cengage
ISBN 10: 978-1-337-61408-5
ISBN 13: 978-1-33761-408-5

Chapter 4 - Section 4.4 - The Trapezoid - Exercises - Page 213: 39d


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
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