Question

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

is 14 cm.

Answer 1

Good Morning!!!

Length of arc = 90° × 14 cm

Answer 2

90° is equal to 1/4 of a circle's central angle, so the arc is 1/4 of the circumference of the circle. C = 2r$\pi$, so the circumference of the circle is 28$\pi$. 1/4 x 28$\pi$ is 7$\pi$.