The area of a circle is the amount of space inside the circle.
The circumference of a circle is the distance around the outside of the circle.
(So no, they are not the same thing.)
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Area = circumference squared... You do circumference divided by 4,... and then divide that by Pi.
Area = (Circumference)2/(4*pi)
You dived the area by the circumference of the circle.
No. The circumference is the distance round the outer edge of the circle, calculkated as 2 x pi x the radius.The area is calculated as pi x the square of the radius.
Area = (Circumference squared)/4 pi Circumference = 2 sqrt(Area times pi)