Well to find the radius of that, you would divide 8 by pi- so about 2.55. that would be the diameter so the radius would be about 1.27
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The circumference of a circle with an 8 cm radius is: 50.27 cm
The circumference of a circle with a radius of 8 meters is: 50.27 meters (r x 2 x Pi = circumference).
50.26548245743669
radius of a circle = 4 inchesFormulas:Circumference of a circle = 2π radiusradius =circumference/2π=8π/2π=8/2= 4
The circumference of a circle with a radius of four is: 25.13