Need help with practice problem

(b) Suppose that a lamina occupies the region D = {(x, y) : y S 2 x2, y 2 x2} and has density function p(x, y) 2 xy . (i) Set up but do not evaluate an iterated integral with differentials in the order: dydx that will yield the mass of the lamina. (ii) Set up but do not evaluate an iterated integral with differentials in the order: dydx that will yield the y coordinate of the center of mass of the lamina (for this part of the question you may assume that m is the mass of the lamina)