Question 45
Mensuration of Plane ShapesA sector of a circle radius 14 cm subtends an angle 135° at the centre of the circle. What is the perimeter of the sector? [Take π = 22/7].
- A.47 cm
- B.61 cm
- C.88 cm
- D.231 cm
Show the answer and explanation
Answer: B (61 cm)
Explanation
Arc = 135/360 × 2 × 22/7 × 14 = 33 cm. Perimeter = 33 + 14 + 14 = 61 cm.