The iterated integral for evaluating D (r, , z) d r dr du over the given region D. D is the solid right cylinder

The iterated integral for evaluating ∫∫∫_D ƒ(r, θ, z) dθ r dr du over the given region D.

D is the solid right cylinder whose base is the region between the circles r = cos θ and r = 2 cos θ and whose top lies in the plane z = 3 - y.

z = 3-y X N y r = cos 0 r = 2 cos 0