Year 7 Interactive Maths - Second Edition

Capacity

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).

Note:

Example 4

Express 3 L in mL.

Solution:

Example 5

Express 4500 mL in L.

Solution:

Example 6

Express 2.5 L in cm³.

Solution:

Example 7

Express 3.46 kL in L.

Solution:

Example 8

Express 6890 L in kL.

Solution:

Example 9

A diving pool contains 985 kilolitres of water. How many litres is this?

Solution:

Example 10

A reservoir can hold 25 450 megalitres of water. What is its capacity in litres?

Solution:

Example 11

Express 975 cm³ in litres.

Solution:

Key Terms

capacity, container, liquid, litre, L, millilitre, mL, kilolitre, kL, megalitre, ML