Calculator area of a circle

Enter the radius, enter the calculation accuracy and click on "Calculate". The calculator will calculate the area of a circle.

Calculator of the circle perimeter


area circle
decimal places

Circle - a geometric figure bounded by a circle. In other words, the circle - this is the set of all points in the plane whose distance to a given point (the center circle) does not exceed a predetermined distance (radius). The circumference of a circle is the limit.

Circle - a centrally symmetric figure.

When you rotate the plane of the center of the circle moves in on itself.

The circle is the convex figure.

The area of a circle is called the area of the figure bounded range. Calculated by the formula: P=2πr

The circle is a figure that has the largest area for a given perimeter. Or equivalently, which has the smallest perimeter for a given area.