Circumference = 2*pi*radius
So the radius = circumference/2*pi
2 x 3.142 x radius = circumference. 3.142 is known as pi.
Use this formula: C = 2*Pi*r
The circumference of a circle that has a radius of 5 inches is 10 X pi or approximatly 31.415926535897932384626433832795. If you know the radius you can find the circumference by multiplying it by 2(pi)
Circumference = 2*pi*radius or diameter*pi
To find the circumference of a circle you multiply pi, usually rounded to 3.12, by the radius. The formula for the circumference of a circle is 2*pi*radius. So double your radius, then multiply by pi, which is approximately 3.14159265 So if I had a circle of radius 2, my circumference would be 2*3.14*2 = 12.56 Good Luck!
The approximate radius is five (5) inches.
It depends on what information you do have about the circle. For example, circumference = 2*pi*radius.
Circumference of a circle = 2*pi*radius
find the radius of a circle with circumference of 42.1
To find the circumference of a circle, you need to multiply the radius by 3.14.
For a circle, circumference = 2 x pi x radius.
By using the equation 2πr that is used to find the circumference, you get 12.56m
Using the circumference, you would find the radius first. The circumference C = 2*Pi*r where r is the radius. Then, the area of the circle = Pi*r^2.
Pi is the number of times the diameter of a circle will fit into the circumference. Pi is not a circle, and does not have a circumference or area. To calculate a circumference USING pi, the circumference is diameter * pi. To find the area using pi, area = pi * radius * radius
A circle with a radius of 8 inches has a circumference of 50.27 inches.
The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.
To find the radius of a circle given its circumference divide the cirumference by 2 times pi
The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.
Circumference of a circle = 2*pi*radius Circumference = 2*pi*5.6 = 35.18583772 units