The area of any circle = pi*radius2
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pi times radius squared. :)
Figure out its radius and multiply it by pi or 3.14.
If the figure is truly a circle, then the circumference is (Radius) x (2 pi) .
1.2 Area = pi X radius^2 So set Area = 4, and figure it out: 4 = pi X radius ^2 4/pi = radius^2
Area of a circle = pi*radius squared Circumference of a circle = 2*pi*radius or diameter*pi