1. The problem statement, all variables and given/known data the moment of area is integral (r^2 dA). With r measured from the origin, use geometry to evaluate this integral in both orders. 2. Relevant equations 3. The attempt at a solution Ok so I set up the integral with dA=rdrd(theta) so with r from 0 to r and theta from 0 to pi/2. i ended up with pir^4/8 which i multiplied by for to account for each quadrant and ended up with (pir^4)/2. is this correct? incorrect? why? i don't really get what the moment refers to. and also, if i am evaluating the correct integral. please help!