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Substitute this value to the formula for circumference: C = 2 × π × R = 2 × π × 14 = 87. agen slot online 9646 cm You can also use it to find the area of a circle: A = π × R² = π × 14² = 615 752 cm² Finally, you can find the diameter - it is simply double the radius: D = 2 × R = 2 × 14 = 28 cm Use our circumference calculator to find the radius