calculus three help please!?!?!?

Question

Calculate the volume of the solid under the surface
f(x,y)=x^2y^2 and above the closed region bounded by y=1,y=2,y=x, and x=0.

Answer 1

Let S[a.b] indicate the integral from a to b. The volume is
S[1,2]S[0,y]S[0,x^2y^2]dzdxdy.