Link: http://imageshack.us/photo/my-images/39/18463212.jpg/ This is a very long problem so I drew it to make things simpler. Part a) tells me to set up a double integral in polar coordinates giving the total population of the city. I have the following: 2π.....4 ∫......∫ δ(r, θ) r dr dθ. Is this correct? π/2...1 For part b) I was plugging in numbers, but I feel it can be both i) and ii). Can someone help me figure this out? For part c) all I would need to do is use what I find in part b) as the integrand for the double integral in part a). Thank you!