Calculus (3rd Edition)

by Rogawski, Jon; Adams, Colin

Published by W. H. Freeman

ISBN 10: 1464125260

ISBN 13: 978-1-46412-526-3

Chapter 15 - Differentiation in Several Variables - 15.1 Functions of Two or More Variables - Exercises - Page 765: 48

Answer

Change in elevation: $140$ m.

Work Step by Step

Refer to Figure 28: since the contour interval is $20$ m, from $A$ to $B$ the change in elevation is $540-400=140$ m.

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