Answer
14,657,415 $mi^2$
Work Step by Step
$r=\sqrt {A/4\pi}$
$1080 =\sqrt {A/4\pi}$
$(1080)^2 =(\sqrt {A/4\pi})^2$
$1166400=A/4\pi$
$1166400*4\pi=A/4\pi*4\pi$
$1166400*4*\pi=A$
$1166400*12.56637=A$
$A=14657414.68$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.6 - Radical Equations and Problem Solving - Exercise Set - Page 731: 63
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