Question

The circle with the center O has a radius of 4 centimeters . If x=30 degrees , what is the length of arc AB ?

Answer 1

2π/3 cm

Explanation:

The formula for arc length is s = rФ, where Ф is the central angle in radians.

Thus, we must convert 30° into radians: that'd be π/6 rad.

Then the arc length here is s = rФ = (4 cm)(π/6 rad) = 2π/3 cm