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The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways — no matter if you're looking for an area-to-radius calculator or a radius to the area one, you've found the right place .
Free online area of a circle calculator which helps you calculate the are of any circle, given its radius. Supports many different metrics such as in, ft, yd, mm, cm, meters, etc.
The area of a circle is: π (Pi) times the Radius squared: A = π r2. or, when you know the Diameter: A = (π/4) × D2. or, when you know the Circumference: A = C2 / 4π.
The area of a regular polygon is half its perimeter multiplied by the distance from its center to its sides, and because the sequence tends to a circle, the corresponding formula–that the area is half the circumference times the radius–namely, A = 1 2 × 2πr × r, holds for a circle.
Understand that you can easily determine the area of a circle using the formula Area = π × r^2, where π is approximately 3.14, and r represents the radius of the circle. Note that radius is half the diameter of a circle.
The area of a circle is all the space inside a circle's circumference. In diagram 1, the area of the circle is indicated by the blue color. The area is not actually part of the circle.
The formula for the area of a circle is A = πr 2, where r is the radius of the circle. The unit of area is the square unit, for example, m 2, cm 2, in 2, etc. The area of a circle formula is useful for measuring the region occupied by a circular field or a plot.
Evaluate the variables of a circle with our circumference and area of a circle calculator.
The area of a circle is the plane region bounded by the circle's circumference. The region shaded in gray inside of circle A above is its area. The area of a circle can be found using the following formula: A = πr 2. where A is area, r is radius, and π is the mathematical constant approximately equal to 3.14159.
The area of a circle is the space occupied by the circle in a two-dimensional plane. It is expressed in square units such as m 2 , cm 2 , etc. The shaded region below shows the area of the circle.