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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).
Pi is a number (which is 3.14....) which you will always get when you divide a circumference of circle by its diameter...
Divide by pi then divide by 2 then square the number and then multiply by 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.