Find the Circumference - Examples (1) You measure the diameter of a circle to be 8.5 cm. Find the circumference. To solve this, simply enter the diameter (2) You want to know the circumference of a pot that has a radius

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Formula The formula used to calculate circle circumference is: C = π · ø Symbols C = Circle circumference π = Pi = 3.14159 ø = Circle diameter Diameter of Circle Enter the diameter of a circle.