Understanding the Formula

* Circumference (C) = 2πr where:

* C is the circumference

* π (pi) is a mathematical constant approximately equal to 3.14159

* r is the radius

Solving for the Radius

1. Set up the equation: We know C = 16π cm. Substitute this into the formula:

16π = 2πr

2. Isolate the radius (r): Divide both sides of the equation by 2π:

(16π) / (2π) = r

3. Simplify:

8 = r

Answer: The radius of the circle is 8 centimeters.