Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 8 - Geometry - Review Exercises - Page 615: 68

Answer

$ l = 8.5km$

Work Step by Step

$ l = \sqrt {12^2 - 8.5^2} = \sqrt {144 - 72.25} = \sqrt {71.75} = 8.5km$
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