Question 28
Mensuration of Plane ShapesA chord of a circle of diameter 42cm subtends an angle of 60° at the centre of the circle. Find the length of the minor arc.
- A.22cm
- B.44cm
- C.110cm
- D.220cm
Show the answer and explanation
Answer: A (22cm)
Explanation
Arc length = (60/360) × 2πr = (1/6) × 2 × (22/7) × 21 = 22 cm.