A square tube with a 52cm diameter requires 52cm x 4 = 2.08m length of material

Therefore your quote will be based on 3m of material + 1 seam

A circular tube with a 52cm diameter requires 3.1416 (Pi) x 52cm = 1.63m length of material

Therefore your quote will be based on 2m of material + 1 seam

To achieve an irregular shape, simply add all the dimensions together:

For example a shape which is 92cm +12cm +88cm +14cm +37cm = 2.43m length of material

Therefore your quote will be based on 3m of material + 1 seam

A panel 4m x 3m requires 2 no 4m x 1.5m lengths of material joined with 1 seam

Therefore your quote will be based on 8m of material and 4m of seaming

A panel 10m x 6m requires 4 no 10m x 1.5m lengths of material joined with 3 seams

Therefore your quote will be based on 40m of material and 30m of seaming