hello can you help me solve this trigonometry problem and in the problem it has answer must be exac. use pi or the sign pi and enter answer using a reduced fractions

Answer
Length of an arc = 17 km
Explanation
The length of an arc subtending angle, θ, at the center of a circle of radius, r is given as
[tex]\text{Length of an arc = }\frac{\theta}{360\degree}\times2\pi r[/tex]For this question,
θ = 195°
r = 5 km
Length of an arc = (195°/360°) × 2 × π × 5 = 17.0169 = 17 km to the nearest whole number
Hope this Helps!!!