(Q11)Find a rational expression for the ratio of the surface area of a cylinder to the volume of a cylinder, where the height is h and the radius is r. Q12) then find the ratio when the radius is 3 and
the height is 10
(Surface area=2rr2 + 2nrh)(Volume=nra)

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x