How do you convert square meters to lineal meters?

Answer 1

You can't, square meters is area and lineal is length.

If what you are asking is actually "how do I know how many linear metres worth of dimensions there are in a specific area", you could not know without referring to the dimensions dictating the area (say a drawing etc.)

If you knew the area you could work out what those two linear dimensions 'might' be by doing some mathematical experimenting for example if it was 100 sq m you need to work out what two number times together would be 100 sq m

e.g

25 x 4

50 x 2

12.5 x 8

etc.