4MA1/1F Jan 2023, Question 15: Composite Perimeter, Area and Volume
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1F (Foundation) · Calculator · 5 marks
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The question, in short
Work out the total area of a stage made from a 4.8 m by 3 m rectangle plus a triangle of height 2.5 m, then decide whether $190 buys enough $16.40 tins covering 1.8 m² each.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 5 marks
- 10.5 × 4.8 × 2.5 = 6
- 23 × 4.8 = 14.4
- 36 + 14.4 = 20.4
- 420.4 / 1.8 = 11.333...
- 512 tins needed (must round up)
- 612 × 16.40 = 196.80
- 7196.80 > 190
- 8Not enough money
AnswerNo, because the floor is 6 + 14.4 = 20.4 m², needing 12 tins at 12 × $16.40 = $196.80, which is more than $190
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