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What is a circle and its formula?

Sagot :

Clairesviz
Circle is the set of all points that are at a fixed distance  from a fixed point in the plane.
Formula:
[tex](x-a)^2 + (y-b^)2 = r^2[/tex]

Area:
A=[tex] \pi r ^{2} [/tex]



Chessviz
Circumference = 2x3.14xradius