If the radius of a circle is 8 cm, the circumference will be: 50.3 cm (C = r x 2 x Pi).
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Circumference of a circle is pi * diameter. Diameter is 2 times radius. So the circumference = 2*(8 cm) * pi = (16 * pi) centimeters. Taking 3.1416 for pi gives 50.2656 cm
Circumference = 2*pi*radius So Radius = Circumference/(2*pi) = 8/(2*pi) = 4/pi = 1.2732 (to 4 dp)
If the radius of a circle is 8 feet the circumference is about 50.27 feet.
The circumference of a circle with a diameter of 8 centimeters is = 8*pi cm
If the radius of the circle is 8 cm the circumference is: about 50.27 cm (r x 2 x pi = circumference).
A circle with a radius of 8 inches has a circumference of 50.27 inches.