I've started working a personal program to design shapes with tubing (and produce G-code for a CNC tubing cutter I'm going to build). It's been roughly 20 years since I was last in a vector geometry ...

A cylinder is a 3D shape with a circular cross section and a curved surface. It has no straight edges. To find the volume or surface area of a cylinder, calculate it in the same as a prism. For a ...