Question

Find the length of an arc of the circle which subtends an angle of ${117}^{\circ }$ at the radius of the circle is $40$ cm.

Answer 1

Angle$=$ Acc/radius
$117°=\frac{117\pi }{180}\frac{117\pi }{180}=\frac{Arc}{40}Arc=\frac{117\times \pi \times 40}{180}=26\pi =81.68cm$