Question: What is the length of the arc of a circle with a radius of 10 units that subtends an angle of 60 degrees at the center?

Options:

1. 10π/3 units
2. 5π units
3. 10π/6 units
4. 20π/3 units

Correct Answer: 10π/3 units

Solution:

Arc length = (θ/360) * 2πr = (60/360) * 2π(10) = (1/6) * 20π = 10π/3 units.