The essence of mathematics is not to make simple things complicated, but to make complicated things simple.
Circle Area Formula - Circle Area Calculator
Remember the circle area formula?
To calculate the area of a circle keep in mind you need the number of square units inside of the circle.
So first you must find radius, which is the distance from the center of the circle to the exterior and then use
the following formula: Area = Π * radius²
This can also be read as: area = 3.14 * (radius * radius)
Just in case.. Π = Pi = 3.14