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CIRCLE CALCULATOR
Area:
Diameter:
Circumference:
CIRCUMFERENCE from RADIUS
Click here. A form will open to enter the radius.
NOTE:
CIRCUMFERENCE: the edge of a circle or the distance around a circle.
DIAMETER: the width of a circle (through center).
RADIUS: 1/2 of the "diameter", or the distance from the center to the edge (circumference).

Click here!