Arcs!

For this blog I created a circle and used a slider for the central angle. The central angle changes the arc length by moving the central angle.

If the radius is 4.35 and the measure of the arc is 90, then the arc length is 6.15. If the radius is 1.94 and the measure is 250, then the arc length is 3.19. If the radius is 2.69 and the measure is 250, then the arc length is 4.41.

Arc length = measure of central angle/360 x 2Pi x r