If the sectorial angle with a radius of 9.6 units is 75°, what is the length of the arc?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 4π.
Length of the arc = L = r × θ
75° in radians = 75 × π/180 = 5π/12
According to the question;
⇒ Length of the arc = 9.6 × 5π/12
⇒ 4π