How do you find the circumference of a circle?
Circumference = pi times radius squared.
C = pi * r^2
Answer of Ms.Sue is wrong.
The circumference is the distance around a closed curve. Circumference is a special perimeter.
The circumference of a circle is the length around it. The circumference of a circle can be calculated using the formulas:
C=d*pi
Wher d is diameter
OR
C=2*r*pi
Wher r is radius
You can check that.
In google type: Circumference
When you see list of results click on :
Circumference-Wikipedia,the free encyclopedia
Ooops! I goofed again! I guess I'd better screw my head on tighter.
Of course, Bosnian is right.
C = pi * diameter
I gave the formula for the area.
To find the circumference of a circle, you can use the formula:
Circumference = 2 * π * r,
where π (pi) is a mathematical constant approximately equal to 3.14159, and "r" represents the radius of the circle.
Here's how you can calculate the circumference of a circle step by step:
1. Measure the radius of the circle. The radius is the distance from the center of the circle to any point on the perimeter of the circle. Make sure to measure in the same units (e.g., centimeters, inches) as you want the circumference.
2. Once you have the radius, multiply it by 2. This will give you the diameter of the circle.
3. Multiply the diameter by π. This will give you the circumference of the circle.
For example, let's say the radius of the circle is 5 centimeters:
Diameter = 2 * 5 = 10 centimeters
Circumference = 10 * π ≈ 10 * 3.14159 ≈ 31.4159 centimeters.
So, the circumference of a circle with a radius of 5 centimeters is approximately 31.4159 centimeters.