Area = pi*r2 = 50.265 sq inches
Circumference = 2*pi*r = 25.133 inches.
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A circle with a radius of 9.6 millimeters has a circumference of 60.32 millimeters.
Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared
28.26=area 18.84=circumference
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius squared
Circumference of a circle = 2*pi*radius or diameter*pi Area of a circle = pi*radius2