Question

Find the length of an arc if measure of the arc is 90° and its radius
is 14 cm.

Answer 1

Measure of arc = 90°
Radius of circle = 14 cm
Length of arc = ${\displaystyle \frac{\theta }{360}\times 2\pi r}$
                      =${\displaystyle \frac{90}{360}\times 2\times \frac{22}{7}\times 14}$
                      = 22 cm