Question

If the radius of a circle is 3 meters, how long is the arc subtended by an angle measuring 30°?
A) 2π meters
B) 4π meters
C) 1/4π meters
D) 1/2π meters

Answer 1

circumference (entire circle) = 2 * PI * radius
circumference (entire circle) = 6 * PI
30 degree arc length = (30 / 360) * 6 * PI
30 degree arc length = (1/2) PI meters
answer is D