The **volume **of a 3D shape describes the amount of space that it takes up. We use formulae to calculate the volume of familiar shapes. To start with, we should memorise the formula for the volume of a cuboid. Make a note of it in your book and be sure to memorise it:

Let’s use it to find some volumes of cuboids and also some missing lengths in examples given by the teacher, then let’s try the exercise below.

**Exercise**

Let’s complete exercise 17M from pages 277 and 278 of the textbook:

The answers are below: