Calculate Circle Circumference: Finding Perimeter with 3 cm Radius

To solve this problem, we'll follow these steps:

• Step 1: Identify the formula for the circumference of a circle as $C = 2\pi r$.
• Step 2: Substitute the known value of the radius into the formula.
• Step 3: Simplify to find the circumference.

Now, let's work through each step:
Step 1: The formula for the circumference, $C$, is $C = 2\pi r$.
Step 2: Substitute the given radius $r = 3$ cm into the formula:
$C = 2\pi \times 3$.
Step 3: Perform the multiplication:
$C = 6\pi$.
Thus, the circumference of the circle is $6\pi$ cm.

Therefore, the solution to the problem is $6\pi$ cm.