answer both parts please

(7%) Problem 7: A student hears a sound with a power of P = 27 uW. At their distance from the source, the sound has intensity / = 0.92 W/m Forbes, David - david.forbes@doane.edu @theexpertta.com - tracking id: 9N69-72-B9-45-AB7A-36840. In accordance with Expert TA's Terms of Service. copying this information to any solutions sharing website is strictly forbidden. Doing so may result in termination of your Expert TA Account. D A 50% Part (a) Assuming the eardrum is circular, what is the radius of their eardrum, in meters? Grade Summary Deductions 0% Potential 100% sin() cos tan() 7 8 9 HOME Submissions cotan( asin() acos() E 4 5 6 Attempts remaining: 1 (83% per attempt) atan() acotan() sinh() 1 2 3 detailed view cosho tanh() cotanh() + 0 END Degrees O Radians VO BACKSPACE CLEAR Submit Hint Feedback I give up! Hints: 0% deduction per hint. Hints remaining: 2 Feedback: 0% deduction per feedback. 4 50% Part (b) Another student stands in the exact same location, but receives 20% more power from the same source. What is the radius of the second student's eardrums