Circumference of circle: 6*pi inches
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circumference = pi x diameter. So rearranging gives diameter = circumference / pi So diameter = 6/pi = 1.9 inches (1 decimal place)
circumference = 6*pi inches
To calculate the diameter from the circumference, divide the circumference by pi - π 6' = 72 inches. 72 / π = 22.9 inches
Circumference of a circle: 2*pi*radius or pi*diameter
Diameter = 6 inches Radius = 3 inches Circumference = 2 x pi x radius = 18.84955592 inches