Use the arc length formula and the given information to find r ... s = 16 cm, θ = 48°; r = ?

The arc length is the length of the arc when it is transformed from a semi-circular path to a linear path. it is determined by multiplying the radius and the angle expressed in radians. Therefore, the expressions is s = 16 cm * (48*pi/180) since pi = 180 degrees. Take note to shift the mode to radians first when using this. The answer is 11.89 cm

S = r*θ

12 cm = r * 36°

r = 12/36

= 1/3

radius = 1/3 cm (or 0.333 cm rounded to 3 decimal places)