Question

A circle has a circumference of 6. It has an arc of length 1.

What is the central angle of the arc, in degrees?

Answer 1

60 degrees

Explanation:

s = r (theta)

(theta) = s/r

= 1 / (3/π) = π/3

as a degree π/3 x 180/π = 60

60 degrees

*Circumference = 2πr

6 = 2πr

r = 6/2π = 3/π