If S Denotes the Length of the Arc of a Circle

If s denotes the length of the arc of a circle of radius r subtended by a central angle θ, find the missing quantity.
- $\mathrm { r } = 15.3$ centimeters, $\theta = 3.5$ radians, $\mathrm { s } =$ ?

A) $55.6 \mathrm {~cm}$
B) $53.6 \mathrm {~cm}$
C) $52.6 \mathrm {~cm}$
D) $54.6 \mathrm {~cm}$