Question: Curve Length 2d 3d

Good morning, I am trying to graph the length of the curve but Maple gives me an error. Please if someone can tell me how I can graph the curve in 2d and 3d.

plot([t*sin(t), t*cos(t), (2*sqrt(2))/3*t^(3/2),t, t = 0 .. Pi]) -> error

 

Please Wait...