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You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).
What do you have? The area of the circle or the circumference? Area: divide the area by pi, then square root it Circumference: divide the circumference by 2 then divide it by pi
To find pi you divide any circle's circumference by its diameter.
divide the circumference by pi and then divide the quotient by 2
Divide the circumference by (2*pi) where pi = approx 3.14159