6. [l1 Points] DETAILS LARCALC11 11.6.032.M|. Find an equation for the surface of revolution formed by revolving the curve in the indicated coordinate plane about the given axis. Equation of Curve Coordinate Plane Axis of Revolution 22 = 16y yz-plane y-axis Need Help? 7. [l1 Points] DETAILS LARCALC11 11.6.036.M|. Find an equation for the surface of revolution formed by revolving the curve in the indicated coordinate plane about the given axis. Equation of Curve Coordinate Plane Axis of Revolution 42 = \\/ 16 X2 xz-plane X-axis Need Help? 8. [-/1 Points] DETAILS LARCALC11 11.6.037. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find an equation of a generating curve given the equation of its surface of revolution. x2+y2722=0 Need Help? 9. [-/1 Points] LARCALC11 11.6.047. ASK YOUR TEACHER Because of the forces caused by its rotation, Earth is an oblate ellipsoid rather than a sphere. The equatorial radius is 3963 miles and the polar radius is 3950 miles. Find an equation of the ellipsoid. (Assume that the center of Earth is at the origin and that the trace formed by the plane 2 = 0 corresponds to the equator.) Need Help? Find the cross product of the unit vectors. j x i2. [-/1 Points] DETAILS LARCALC11 11.4.009. Find u x v, v x u, and v x v. u = (-5, -3, 5) v = (9, 1, 2) (a) uxv ( b ) v xu (c) v xV