What is the area of a circle?

The area of a circle is the size of the 2-dimensional space inside the circle's

closed curved boundary.

The area can be calculated in terms of known linear measurements of the circle:

- - Area = (π) x (radius) ²

- - Area = (π/4) x (diameter) ²

- - Area = (1/2) x (circumference) x (radius)

- - Area = (1/4) x (circumference) x (diameter)

Any of these formulas will give you the area. The one you decide to use

just depends on what you already know about the circle.