Answer: The total power radiated is 11.51 W.
Step-by-step explanation:
Since we have given that
Distance away from a siren = 4.72 m
Intensity of sound = [tex]4.11\times 10^{-2}\ w/m^2[/tex]
As we know the relation between power, intensity and area.
So, it becomes,
[tex]I=\dfrac{P}{A}\\\\I=\dfrac{P}{4\pi r^2}\\\\4.11\times 10^{-2}=\dfrac{P}{4\times \dfrac{22}{7}\times 4.72^2}\\\\P=4.11\times 10^{-2}\times 4\times \dfrac{22}{7}\times 4.72^2\\\\P=11.51[/tex]
Hence, the total power radiated is 11.51 W.
