A circular park has a radius of 20 meters. If a person walks...

Question Analysis
This problem assesses the ability to calculate the arc length of a circle given the radius and the central angle in degrees.

Key Concept Explanation
The formula for the arc length of a circle with radius and central angle (in radians) is . To use this formula, the angle must be converted from degrees to radians using .

Step-by-step Solution
1. Convert the angle from degrees to radians: