The formula for calculating the circumference of a circle is 2pr where r=radius and p (pie) = 3.1416 so for your question thr circumference = 2 x 3.1416 x 8 = 50.2656
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A circle with a radius of 8 inches has a circumference of 50.27 inches.
A circle with a radius of 8 units has a circumference of 50.3 units.
Circumference of a circle = 2*pi*radius = 8*pi or 25.13274123 units
The radius and diameter of a circle whose circumference is 25.12 are:r = 4d = 8
circumference formula is pi(diameter) diameter is 2(radius) radis=4; diameter=2(4)=8 pi(8)=circumference of the circle...this is the EXACT answer plug it into a calculator and you will get 25.1327412287 your welcome ;)