4024/12 May/Jun 2022, Question 23: Area of a Sector
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Find the area of a major sector with radius 3 cm and missing minor angle 80°, giving the result as kπ with integer k.
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Solution · 2 marks
- 1Angle of major sector = 360 − 80 = 280°
- 2Area = 280/360 × π × 3²
- 3= 7/9 × 9π
- 4= 7π cm²
Answer7π
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