Volume of 3D shapes: Formulae

In a nutshell

There are different formulae to learn for the volumes of 3D shapes.

There are two more 3D shapes that you need to be familiar with: prisms and frustums.

A prism is a 3D shape that is a 2D shape stretched in the third dimension. The 2D shape is called it's cross-section.


This is a prism with a cross-section that is a hexagon. Therefore, this shape is called a hexagonal prism.	This is a prism with a cross-section that is a triangle. Therefore, this shape is called a triangular prism.	A cylinder is also a type of prism, it has a circular cross-section.