Find the area with this circle area formula:
Multiply Pi (3.1416) with the square of the radius (r) 2.
Area = 3.1416 x r2
The radius can be any measurement of
This calculates the area as square units of the length used in the radius.
Example: The area of a circle with a radius(r) of 3 inches is:
Circle Area = 3.1416 x 32