You should know the following formulae to work out the volumes of these shapes:

**Cube**

You must know:

- the
**side**length

*Remember that the length, the width and the height will all be equal to the side length, because this is a CUBE.*

Volume of **cube** = side length × side length × side length

**Cuboid**

You must know:

- the
**length** - the
**width** - the
**height**

Volume of **cuboid** = length × width × height

**Example 1**

Calculate the **volume **of this **cuboid **in **cm ^{3}**.

**Answer**

The length is** 15 cm**, the width is **4 cm** and the height is **8 cm**.

**Volume of cuboid **= length × width × height = 15 × 4 × 8 = 60 × 8** = 480 cm ^{3}**

**Example 2**

Calculate the **volume **of this **cube **in **mm ^{3}**.

**Answer**

The side length is **7 cm**, so the width and the height are also 7 cm.

This will be **70 mm.**

NB: We want the **answer **in **mm ^{3} **which is why we should work in mm not cm.

**Volume of cube **= side length × side length × side length = 70 × 70 × 70 = 49 × 7 × 10 × 10 × 10 = 343 × 1000 = **343000 mm ^{3}**

*NB: The length, the width and the height are all interchangeable with each other, depending on how you look at a cuboid.*