Radius Of A Circle Calculator
Calculate radius of a circle — circle geometry with radius and diameter.
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Area
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Circumference
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Diameter
Recent Calculations
What Is Radius Of A Circle?
Radius of a Circle calculates properties of a circle.
Formula
A = πr², C = 2πrFrequently Asked Questions
What is π?
π (pi) is approximately 3.14159. It's the ratio of a circle's circumference to its diameter.