Answer
18ft
Work Step by Step
Pythagorean theorem:
$(7.5)^{2}$ + $x^{2}$ = $(19.5)^{2}$
56.25 + $x^{2}$ =380.25
$x^{2}$=324
x=18 (Dimensions are always positive)
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.7 - Modeling with Equations - 1.7 Exercises - Page 77: 51
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