cylindrical shell

A cylindrical shell is a three-dimensional shape formed by revolving a rectangle or a curved segment around a central axis, creating a hollow tube-like structure, such as a soda can or a pipe. In mathematics and physics, it’s often used to analyze volumes, surface areas, or material properties of objects with cylindrical symmetry. Think of it as an invisible layer or “shell” that encompasses an inner space, with a specific thickness. This concept helps in calculating how much material is needed for manufacturing or understanding how forces and stresses distribute in cylindrical objects.