Diameter - radius - circumference - area Calculator
Utility to calculate diameter, radius, circumference and area of a circle. The used formula for calculations are indicated below the form. Simply enter a value in the corresponding column and press <enter> or click the Calculate button.
Used formulas for Diameter, Radius, Circumference and area calculations :
Diameter = 2 x Radius
Circumference = Diameter x Pi (3.14159265359)
Area = Pi x Radius^2
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