Calculate the Area of a Circle
This will calculate the area of a circle based on its radius.
Area of a 10′6″ radius circle
(results may be rounded)
Area of a Circle Formula
The area of a circle is pi times the square of its radius.
Area = π * Radius2
Radius of a Circle
The radius of a circle is the distance from the center to any edge. It is half of the diameter.
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