An arc of a circle subtends an angle of 60o at the centre. If the radius of the circle is 3cm, find , in terms of (pi), the length of the arc
-
A.
(pi)cm -
B.
2(pi)cm -
C.
3(pi)cm -
D.
6(pi)cm
Correct Answer: Option A
Explanation
Length of arc = (frac{theta}{360} times 2pi r)
= (frac{60}{360} times 2pi times 3cm)
= (pi)cm