Formula to calculate the length of an arc.
Where; AB – is the arc length.
θ – is the angle subtended by radius MA and radius MB.
r – is the radius also labelled as MA and MB.
π – is a constant estimated to be 3.142.
Calculate the length of an arc with radius 10cm and the angle ssubtended by the radius is 50 degrees.
Therefore, the length of the arc is 8.728 cm.