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Problem. 9 : Use polar coordinates to find the volume of the solid that lies inside the sphere x2 + y + 22 = 64 and outside the cylinder a + y? = 25. volume : ? Problem. 10 : Use polar coordinates to find the volume of the solid that is bounded by the paraboloid z = 4 + 2x2 + 2y and the plane z = 12 in the first octant. volume = ? Problem. 11 : Use polar coordinates to find the volume of the solid that is bounded by the paraboloids z = 8x2 + 8y and z = 9-x2 - y?. volume =