Question

What is the length of the red arc?

Answer 1

17.8 cm

Explanation:

as the length of the arc equal =(measure of arc ÷ 360) * (2πr)

so =(60÷360)*(2*π*17) = 17.8 cm

Answer 2

17/3 pi

Explanation:

First find the circumference of the circle

C = 2*pi*r

C = 2*pi * 17

C =34 pi

The arc is 60degrees and a circle is 360 degrees

The arc is 60/360 or 1/6 of the circle

1/6 * C = 1/6 *34 pi = 34pi/6 = 17/3 pi