the lay ratio is the ratio between the lay length of the cabble and the Outer diameter af the cable( or the layer)

lay ratio = lay length / OD

and the lay ratio standard from ISO

Look for the meaning of one lay length of a mooring hawser

Its shadow will be 50 millimeters in length, if you lay it down on a flat surface.

The length of pipe is required to be known to help procure the required quantity of pipe.

this how you can figure it out it lay it out and measure it with a tap measure the an see what it comes out to be