Can someone help me with these problems?

Question 1:

Find the exact length of the curve. X = 9cos(t) cos(9t), y = 95in(t) 5in(9t}, D s t 5 it E \fFind the exact area of the surface obtained by rotating the given curve about the X-EIXiS. x=13, y=t2, ogrgl S Find the surface area generated by rotating the given curve about the yaxis. X=3t2, y=2t3, osrs4 S Find the surface area generated by rotating the given curve about the y-axis. x=e - t, y = 4e /2, Oct : 5