The formulas for calculating the area, circumference, diameter, and radius of a circle are as follows:
Area = πr^2
Circumference = 2πr
Diameter = 2r
Radius = The distance from the center of the circle to any point on its circumference.
In these formulas, π is a constant approximately equal to 3.14159 and r represents the radius of the circle.
Area Circumference Diameter Radius pei
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