Volume of a prism

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:

Different types of prism

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:

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