sound power = Intensity * covered area
P = I*A
= I*4pi*r^2
= 10^-6 * 4pi*10^2
= 1.25*10^-3 W
so the sound power from the source is 1.25*10^-3 W
if there was an average intensity of 10^-6 W/M^2 measured at 10 meters from a source,...
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