Question
Question: What is the length of the arc of circle of radius 30 cm which subtend an angle \(\frac{\pi}{6}\) at ...
What is the length of the arc of circle of radius 30 cm which subtend an angle 6π at the centre?
A
11.7 cm
B
14.7 cm
C
16.7 cm
D
15.7 cm
Answer
15.7 cm
Explanation
Solution
Here, θ=6π,r=30cm
As,θ=rl⇒l=θr
=6π×30cm=63.14×30cm=15.7cm