I want to find out the length of a net in Layout.

For ex: if i have straight path, with 2 co-ordinates bigin and end points x=((a b) (a c)), by using car and cadr i got it.

But if the path is having bending the co-ordinate points are more, how can we make use of car and cadr to get the legth.

Or is their any other solution to find out the length of path?

anybody help me i am new to this!!!

Sathisha