how are they solve?

Find the exact length of the curve. x = 5 cos(t) - cos(5t), y = 5 sin(t) - sin(5t), Osts n Need Help? Read It Talk to a Tutor -/1 points V SCALCET8 10.2.513.XP. Find the exact area of the surface obtained by rotating the given curve about the x-axis. x = 9t - 3ts, y = 9t2, osts 2 Need Help? Read It Talk to a Tutor -/1 points V SCALCET8 10.2.510.XP. Find the area enclosed by the x-axis and the curve x = 1 + el, y = t - t2. Need Help? Read It Watch It Talk to a Tutor