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Area of a circle, circle area formula calculator

Area of a circle, circle area formula calculator allows you to find an area of a rhombus, by the formula, using radius or diameter of circle.

Method of calculating the area of a circle:

Radius:

  

The area of a circle

A circle is the set of all points in a plane that are at a given distance from a given point, the centre.
Formula for area of a circle The area of a circle ,
where r - circle radius, d - diameter