1. The problem statement, all variables and given/known data Find the moment of inertia of a uniform disk of mass m and radius r about an axis normal to the disk, through a point x from the centre. 2. Relevant equations 3. The attempt at a solution Let ρ be the density. I=ρ∫r^2 dA=ρ∫∫r^3 dr dθ in polar coordinates. However I don't know what the limits of r should be. θ is between 0 and 2 pi, but r max varies, so I'm confused.