/sci/ - Science & Math

why do we make springs and wires in circular coils rather than triangular or squares (which would waste less space)

For a given circular tube capable of withstanding a certain force, how does putting triangular/rectangualar prisms inside of it affect its strength, pic related

I dont know why I started thinking about it but I hate when you think about something and you can't stop thinking about it even though its not really an important or useful question