Find the radius of a circle in which an arc of length 44cm subtends angle 200° at the centre of the circle. [Take π = 22/7]
-
A.
3.9cm -
B.
12.6cm -
C.
25.2cm -
D.
38.4cm -
E.
124.5cm
Correct Answer: Option B
Explanation
44 = 200/360 x 2 x 22/7 x r
r = 360 x 7 x 44/200 x 2 x 22
= 12.6cm