The area of a circumference can be calculated with this formula:

Where "r" is the radius of the circle.
The area of a circle can be found with this formula:

Where "r" is the radius of the circle.
If you solve for "r" from the formula of a circumference, you get:

Knowing that:

You get:

Knowing the radius, you can find the area of the circle:

The answer is:
