2. Find the area of the surface generated when the given curve is revolved about the given axis. v: 8x+ 5; for 0 5x 5 2; about the x-axis The surface area is square units. {Type an exact answer in terms of 11:.) 4. Find the area of the surface generated when the given curve is revolved about the given axis. y= 18 (ex + e- 9*), for - 5x 5; about the x-axis The surface area is square units. (Type an exact answer, using it as needed.)9. Find the area of the sun'ace generated 1when the given curve is revolved about the given axis. fl (1599 41 2 T] ; about the y-axrs v=20+ WIOOX2 between the points (20.20) and [ The surface area is square units. (Type an exact answer, using :r: as needed.)