Worked example
27 October 2026
Understanding how to work out the volume of a cuboid is a key skill for 11+ maths. Children also need to know how to change the answer into different units, like litres. This step-by-step example helps your child see exactly how to use the formula and make the conversion.
Worked example
Find the volume of a cuboid that is 6 cm long, 4 cm wide and 3 cm high. Then convert the volume from cubic centimetres (cm³) to litres (L).
Step 1: Use the formula for volume.
Volume = length × width × height
Volume = 6 cm × 4 cm × 3 cm
Step 2: Work out the multiplication.
6 × 4 = 24
24 × 3 = 72
So, the volume is 72 cm³.
Step 3: Convert cubic centimetres to litres.
Key insight: 1000 cm³ = 1 litre
72 cm³ ÷ 1000 = 0.072 litres
The correct answer is 72 cm³ or 0.072 litres.
Now your child can spot the formula for finding the volume of a cuboid and knows how to convert between cubic centimetres and litres. Practice questions on this topic will help build confidence and speed with the same method.
