4. (5 points) Find the volume of the solid under the surface z = 3r + 5y and above the region in the first quadrant bounded by y = x3 and y = 4r. 5. (4 points) Rewrite the following integral in terms of polar coordinates [ [ ( ty) dude. 6. (5 points) Find the area of the region inside the circle r = 3 sin(0) but outside the cardioid r = 1 + sin(0). lect in ePortfolio n Download Print B F O Rain.. search O