Calculate the length of an arc of a circle of diameter 14cm, which subtends an angle of 90o at the centre of the circle

Calculate the length of an arc of a circle of diameter 14cm, which subtends an angle of 90o at the centre of the circle

Answer Details

Length of an arc $\frac{\theta }{{360}^o}\pi d$
= $\frac{{90}^o}{{360}^o}$ x $\pi$ x 4cm
= 4$\pi$ cm