Please help me, i can't get this question wrong, please and thank you.

If you could answer these your a life saver

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm

Proportions in triangles solve for x