Answer
400 square meters. This is impractically large!
Work Step by Step
Use the given intensity, which is the power divided by area.
$$I=\frac{P}{A}$$
$$A=\frac{P}{I}=\frac{(100hp) (746W/hp)}{200W/m^2 }=373m^2\approx 400m^2$$
Physics: Principles with Applications (7th Edition)
by Giancoli, Douglas C.
Published by
Pearson
ISBN 10:
0-32162-592-7
ISBN 13:
978-0-32162-592-2
Chapter 22 - Electromagnetic Waves - Problems - Page 642: 33
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