JAMB Mathematics 2013 Objective — Question 29
Question 29 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2013 Objective paper, with the correct answer and a full explanation.
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A chord of a circle subtends an angle of 120° at the centre of a circle of diameter 4√3 cm. Calculate the area of the major sector.
- A. A. 32πcm²
- B. B. 4πcm²
- C. C. 8πcm²Correct
- D. D. 16πcm²
Explanation
r=2√3; minor sector area=(120/360)π(12)=4π; major sector=12π−4π=8πcm².
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