Geometry and TrigonometryEasyTiles to cover a floor
Geometry and Trigonometry practice question
A square tile has sides of 30 centimetres. How many tiles are needed to cover a floor that is 3 metres by 3 metres?
Answer: 100
The floor is 300 cm by 300 cm, so 10 tiles fit along each side: 10 × 10 = 100.
Common wrong answers
- If you answered 10
- 10 is the number along one side.
- If you answered 30
- 30 divides 900 by 30.
- If you answered 1000
- 1000 multiplies by 10 once too often.
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