Remember that the formula for the arc lenght s over a cirfumference is:
[tex]s=r\theta[/tex]
Where:
r is the radius of the circumference
Theta is the angle related to the arc (in radians)
Thereby, the arc lenght would be:
[tex]s=1\cdot\frac{\pi}{6}\rightarrow s=\frac{\pi}{6}\rightarrow s=0.524[/tex]
(Answer: Option B)
