In the integral 1 a: f] m2+y2+mdydaz 3 we use Cartesian coordinates. Rewrite to an integral in polar coordinates 6 41(9) / f 90", :9) dr d9 6 ch?) 90"! 9) Z Note! for Stack to correct correctly, 8 must be in circulation n58$n. cm) 4 l 1(9) 4 l