Capsule (geometry)
A capsule, or stadium of revolution, is a basic three-dimensional geometric shape consisting of a cylinder with hemispherical ends. Another name for this shape is spherocylinder.
It can also be referred to as an oval although the sides are straight parallel.
Usages
The shape is used for some objects like containers for pressurised gases, building domes, and pharmaceutical capsules.In chemistry and physics, this shape is used as a basic model for non-spherical particles. It appears, in particular as a model for the molecules in liquid crystals or for the particles in granular matter.
Formulas
The volume of a capsule is calculated by adding the volume of a ball of radius to the volume of the cylindrical part. Hence, if the cylinder has height,The surface area of a capsule of radius whose cylinder part has height is.