The circumference of a circle = \(\pi d\) or \(2\pi r\). Look at the sector of the circle shown below. To calculate the length of the arc, we need to know what fraction of the circle is shown.

It also separates the circle into two segments - the major segment and the minor segment. The formula to calculate the arc length is: \(\text{Arc length} = \frac{\text{angle}}{360^\circ} ...