Answer
The middle of the pool has a depth of 8 feet.
Work Step by Step
Middle=.5(AD+BC)
Middle=.5(3+13)
Middle=.5(16)
Middle=8'
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: 39
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