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

View answer & explanation

Correct answer is B

44 = 200/360 x 2 x 22/7 x r

r = 360 x 7 x 44/200 x 2 x 22

= 12.6cm

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