Answer
The plane radiates energy in the form of sound waves at a rate of $3.1\times 10^4~W$
Work Step by Step
We can find the rate that the plane radiates energy in the form of sound waves:
$I = \frac{P}{A}$
$P = I~A$
$P = I~(4\pi~r^2)$
$P = (1.0\times 10^2~W/m^2)~(4\pi)~(5.0~m)^2$
$P = 3.1\times 10^4~W$
The plane radiates energy in the form of sound waves at a rate of $3.1\times 10^4~W$
