c=2πr
c/2π=r
So: 3397/(2π)=r
r=540.6
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2
Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)
find the radius of a circle with circumference of 42.1
To find the circumference of a circle, use the equation: Circumference = 2*π*radius so when the radius is r, the circumference is 2πr
Diameter = circumference/pi Radius = circumference/2*pi