the plane x + y = 4 and the cylinder y² + 4z² = 16. 0 ≤ x ≤ 4 - y, 0 ≤ θ ≤ π, 0 ≤ z ≤ 2
(9) Find the volume of the right circular cylinder whose base is the circle r = 2 sin θ
in the xy-plane and whose top lies in the plane z = 4 - y.
(10) Find the volume of the solid right cylinder whose base is the region between the