In a circle of radius 42 cm, an arc subtends an angle of 60° at the center. Find the length of the arc. (Take )
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 44 cm.
Given that
Radius (r) = 42 cm
An angle of 60° at the centre
Formula used
Arc length = (θ/360) × 2πr = rθ × π/180
Calculation
Arc length = 42 × 60 × π/180 = 14 × 22/7 = 44 cm