Question

If a circle has a central angle of 2π3
and a radius of 27 millimeters, how long is the arc formed by that angle?(1 point)

67.5π2
mm

5π18
mm

18π
mm

15π
mm

Answer 1

Arc length s = r·θ. Here r = 27 mm and θ = 2π/3, so s = 27·(2π/3) = 18π mm.