As long you remember the formula you should be fine....
Circumference = 2 * pi * r
Or pi * d
where r = radius & d = diameter of the circle.
Also pi (=3.143) can be roughly put down as 22/7 if you more comfy with fractions than the decimals.
the equation is 2*pi*r
r being the radius
Circumference = pi x diameter
Circumference = 2 x pi x radius
Pi times D = C
D= Diameter
C=Circumference
The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.
A simple formula to calculate the circumference of a circle: so in this case:
int radius = 2; int output; radius = radius * 2; output = radius * Math.PI; Console.WriteLine(output);
Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle
You use a protractor.
Because the ratio of the circumference to the diameter of every circle is pi. So circumference = pi*diameter.
Circumference = diameter*pi
Doubling the radius will give the diameter and times this by pi will give the circumference of the circle.
We use it to calculate the circumference of a circle.
The circumference and area of a circle, with radius r is: circumference = 2*pi*r and area = pi*r2 Use the first to calculate r and then the second to calculate the area.
The circumference is essentially the perimeter of the circle, or the distance around the circle. To calculate the circumference of a circle, use the formula C = 2 * pi * r. Circumference = two times pi times the radius of the circle.
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