to find the radius of something, halve it's circumference
No, C = 2 pi R
R = C/2pi = C/6.2832 where pi = 3.1416
Circumference = 2*pi*radius So Radius = Circumference/(2*pi)
If you know the radius, then Diameter = 2 x (radius) Circumference = (pi) x (diameter) or Circumference = 2 x (pi) x (radius)
by timesing the circumference by pie
Divide its circumference by 2*pi which will give the radius of the circle. Area of the circle then is pi*radius squared
Radius = Circumference/(2*pi)
Well, isn't that a happy little question! To find the radius when you know the circumference, you can use the formula: circumference = 2 * π * radius. So, if the circumference is 48 inches, you can divide that by 2π to find the radius. Just remember, there are no mistakes, only happy accidents in math and in art!
Circumference = 2 x pi x radius
Radius = circumference/pi
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Area = radius x radius x pi. (Radius is half the diameter and pi is near enough 3.14 )
Radius = square root of (area/pi) Circumference = 2*pi*radius
To find the circumference of a circle, you need only know the radius or diameter of the circle. The circumference of a circle is calculated as 2 x Pi x radius OR Pi x diameter. Pi is approximately 3.1415926.