Pls help with these four problems

Q1:

Let C be the line segment connecting the point p = (2, 4, 0) to the point q = (0, 5, 5). Find a curve c(t) : [0, 1] > [R3 that traces out C, the arc length of (20'), and ||p q|| . (Express numbers in exact form. Use symbolic notation and fractions where needed. For C(r), write you solution using the vector notation (ac, *, ac) and use I for the parameter that takes all real values.) IIv-q" = Find the length of the curve c(t) defined by c(t) = (-4 cos (t), -4 sin (t), t) if 0