But absence of radius, perhaps assume unit radius? Not stated.
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- Length of one helical turn: circumference endpoint distance = \( \sqrt{(2\pi r)^2 + \text{pitch}^2} \), but radius not given.
- Wait — underdetermined.
- Alternative: if we assume the pitch is 0.5 m per turn along a surface, and no radius specified, but in such problems, often the helix length per turn is approximated or:
- Better: in robotics, for a helical path with step-by-step, the total path length ≈ \( \sqrt{(\text{linear})^2 + (\text{total circumferential distance})^2} \)
- Circumference per turn = \( 2\pi r \), but `r` unknown.
- Problem lacks radius.
