WAEC Mathematics 2023 Question 33

Question 33

Mensuration of Plane Shapes

The angle of a sector of a circle of radius 3.4 cm is 115°. Find the area of the sector. [Take π = 22/7]

  1. A.10.2 cm2
  2. B.11.6 cm2
  3. C.12.7 cm2
  4. D.9.4 cm2
Show the answer and explanation

Answer: B (11.6 cm2)

Explanation

Area = 115/360 × 22/7 × 3.4² = 115/360 × 22/7 × 11.56 ≈ 11.6 cm².