JAMB Mathematics 2010 Question 32

Question 32

Mensuration of Plane Shapes

An arc subtends an angle of 50° at the centre of circle of radius 6 cm. Calculate the area of the sector formed. (π = 22/7)

  1. A.90/7 cm2
  2. B.110/7 cm2
  3. C.100/7 cm2
  4. D.80/7 cm2
Show the answer and explanation

Answer: B (110/7 cm2)

Explanation

Area = 50/360 × 22/7 × 36 = 110/7 cm2.