What will be the radius of circle in which a central angle

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What will be the radius of circle in which a central angle of 60° intercepts an arc of length 37.4 cm.

Here,

θ = 60°
l = 37.4 cm
r = ?
We know that,

1° =		π		^R
		180°

⇒ 60° =		π	× 60		^R
		180°

⇒ 60° =		π		^R
		3

We know that,

θ =	l
	r

⇒	π	=	37.4
	3		4

⇒ r =	37.4 × 3
	π

r =	37.4 × 3 × 7
	22

= 1.7 × 21 = 35.7 cm