Year 8 Interactive Maths - Second Edition

## Capacity

The capacity of a container is the volume of liquid that can fit inside the container.

For example, the capacity of a hot water tank is the volume of water that can fit inside the tank. The capacity of a petrol tank is the volume of petrol that can fit inside the tank.

The standard units often used for capacity are the litre (L) and the millilitre (mL).

A container with an inner volume of 1 cm3 will hold 1 mL of liquid. That is:

We also use the units called kilolitre (kL) and even megalitre (ML).

#### Example 7

Express 4 L in mL.

#### Example 8

Express 6500 mL in L.

#### Example 9

Express 3.6 L in cm3.

#### Example 10

Express 5.78 kL in L.

#### Example 11

Express 5760 L in kL.

#### Example 12

A diving pool contains 746 kilolitres of water. How many litres of water does the pool contain?

##### Solution:

So, the pool contains 746 000 L of water.

#### Example 13

A reservoir can hold 49 760 megalitres of water. What is its capacity in litres?

##### Solution:

So, the capacity of the reservoir is 49 760 000 000 L.

#### Example 14

Express 438 cm3 in litres.