Answer
A$\approx$5890.5 ft$^2$
Work Step by Step
A=$\frac{1}{4}$$\pi$R$^2$-$\frac{1}{4}$$\pi$r$^2$
A=$\frac{1}{4}$$\pi$(380)$^2$-$\frac{1}{4}$$\pi$(370)$^2$
A=36,100$\pi$-34,225$\pi$
A=1,875$\pi$
A$\approx$5890.5 ft$^2$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 8 - Section 8.5 - More Area Relationships in the Circle - Exercises - Page 391: 43
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