4MA1/1H Jun 2021, Question 12: Arc Length
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 1H (Higher) · Calculator · 2 marks
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The question, in short
Using the diagram of a sector with radius 7 cm and angle 50°, work out the arc length, giving the answer to one decimal place.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Arc length = 50/360 × 2πr
- 2Full circumference = 2 × π × 7 = 43.98...
- 3Arc = 50/360 × 43.98... = 6.108...
- 4To 1 decimal place: 6.1
Answer6.1
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