JAMB Mathematics 2010 Objective — Question 32
Question 32 of 50 from the Joint Admissions and Matriculation Board (JAMB) Mathematics 2010 Objective paper, with the correct answer and a full explanation.
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32. An arc subtends an angle of 50 at the center of circle of radius 6 cm. Calculate the area of the sector formed. A. 80/7 cm2 B. 90/7 cm2 C. 100/7 cm2 D. 110/7 cm2
- A. 80/7 cm2
- B. 90/7 cm2
- C. 100/7 cm2
- D. 110/7 cm2Correct
Explanation
Area of sector = (theta/360) x pi r^2 = (50/360) x (22/7) x 36 = 110/7 cm2.
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