Similarly, we can calculate the cylinder volume using the external diameter, D, and internal diameter, d, of a hollow cylinder with this formula:Ĭylinder_volume = π × × cylinder_height Where R – external radius, and r – internal radius The formula behind the volume of a hollow cylinder is:Ĭylinder_volume = π × (R² - r²) × cylinder_height
It's easier to understand that definition by imagining, e.g., a drinking straw or a pipe – the hollow cylinder is this plastic, metal, or other material. The hollow cylinder, also called the cylindrical shell, is a three-dimensional region bounded by two right circular cylinders having the same axis and two parallel annular bases perpendicular to the cylinders' common axis.
