AREAOFACIRCLE.INFO

Calculating area of a circle involves solving simple equation presented below. The only necessary measurement needed is the radius, which is a distance from the center of a circle to its edge. The π number is usually approximated to two decimal places and therefore equals 3.14... Area of a circle is equal to the surface of a plane that is limited by a circle. This includes the circle itself. In the matter of fact, geometry doesn't give width to borders of any of the shapes on the plane. Therefore in that sense the border of a circle doesn't have width and therefore it makes no sense to say whether the edge is included in the calculation or not. Calculating area of a circle requires one simple computation where the radius has to be known. The remaining part of the equation is dependent on so called π value. This can be calculated to the required precision, if extreme accuracy is required. However in the 99.9% of cases it is enough to take the approximation with several decimal places..

Also known as: area of a circle