4MA1/2FR Jan 2023, Question 13: Composite Perimeter, Area and Volume
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2FR (Foundation) · Calculator · 5 marks
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The question, in short
Work out the total cost of the least number of paint tins needed to cover the L-shaped floor once, using 7 m² per tin at £23.90 each.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 5 marks
- 1Split the floor into an 8 m × 12 m rectangle and a 7 m × 3 m rectangle (15 − 8 = 7)
- 2Area = 8 × 12 + 7 × 3 = 96 + 21 = 117 m²
- 3Tins: 117 ÷ 7 = 16.7…, so she must buy 17 tins
- 4Cost = 17 × £23.90 = £406.30
Answer406.30
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