A shapeās volume is a measure of its total 3-dimensional space. You can use the following simple formulas to help you calculate the volume of shapes like cuboids and prisms.

Part of

We've learned that the volume of a cuboid is its length multiplied by its width multiplied by its height ( ).

The area of the green shaded end of the cuboid (the cross section) is , so you can also say that the volume of a cuboid is:

This formula works for all prisms:

- Question
**a) What is the volume of this triangular prism?****b) What is the volume of this prism?**a)

b) The area of the cross section is and the length is , so the volume is .

Remember that the volume is: