A 25MW Jet engine produces a sound level of 120dB, the threshold of pain at a distance of 100m from the engine Recall the threshold of human hearing

A 25MW Jet engine produces a sound level of 120dB, the threshold of pain at a distance of 100m from the engineRecall the threshold of human hearing is 1 * 10^(-12) W/m^2a) What portion of the jet power is lost to producing this sound?b) You are at your silent summer house ( 40dB) and you can just hear the sound of the smae jet engine at the airport. How far away is your house from the airport?c) is the result of your simple calculation reasonable?