Most scientific calculators have a button for pi. So to find the circumference of a circle multiply pi by the diameter. If there is no pi button you can approximate pi as 3.14.
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
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.
multiply the diameter times pi (3.14159265)
If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)
Diameter of a circle = circumference/pi
You multiply the circle's diameter by 3.14 (Pi) to get the circumference.
Diameter = circumference/pi
Circumference of a circle = 2*pi*radius
Diameter = circle's circumference/pi
Divide the circumference by Pi.
The circumference of a circle is found using the following formula: Circumference of a Circle = Pi x r2 So with these equation in mind we get the following problem. Circumference of a Circle = 3.14 x 14 Circumference of a Circle = 43.96 units
25.1
pi times diameter
using pi
By using the equation 2πr that is used to find the circumference, you get 12.56m
What do you have? The area of the circle or the circumference? Area: divide the area by pi, then square root it Circumference: divide the circumference by 2 then divide it by pi
The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.