Question 26
Mensuration of Plane ShapesAn arc subtends an angle of 72° at the centre of a circle. Find the length of the arc if the radius of the circle is 3.5 cm. [Take π = 22/7]
- A.6.6 cm
- B.8.8 cm
- C.4.4 cm
- D.2.2 cm
Show the answer and explanation
Answer: C (4.4 cm)
Explanation
Arc length = (72/360) × 2 × (22/7) × 3.5 = (1/5) × 22 = 4.4 cm.