Q1 - Evaluate the iterated integral by converting to polar coordinates

∫0 to 2 ∫-Sqrt 4-x^2 to Sqrt 4-x^2 e^(-x^2-y^2) dy dx

The region of integration is bounded by

-Sqrt 4-x^2 ≤ y ≤ Sqrt 4-x^2 and 0 ≤ x ≤ 2

Q2 - Evaluate the triple integral ∫∫R∫ OR ∫∫∫R f(x,y,z)dV

With f(x,y,z)=Sqrt y -3z^2

Q = {(x,y,z)/2 ≤ x ≤ 3, 0≤ y ≤1, -1≤ z ≤1 }