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C = 2 pi (r) (two times pi times the radius of the circle)

OR

C = pi (d) (pi times the diameter of the circle).

Often, pi is rounded off to equal 3.14, so if your calculator does not have a pi button on it, then use 3.14.

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Q: Simple formula to find the circumference of a circle?
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Related questions

How do find the circumference of a circle?

The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.


If the area of a circle is 201.06 then the circumference of the circle is?

The formula to find the circumference of a circle is C = 2πr, where r is the radius of the circle. To find the circumference, you first need to find the radius by using the formula for the area of a circle (A = πr^2). Given that the area is 201.06, you can solve for the radius. Once you have the radius, you can plug it into the formula C = 2πr to find the circumference.


How do you find the formula for the circumference of a circle?

Circle's circumference = 2*pi*radius or diameter*pi


How do you find the of a circumference of circle in math?

the formula is: circumference= p*diameter


How do you answer the formula of a circumference?

to find the circumference of a circle you do 2 times3.14timesthe radius


What formula do you use if you know the diameter of a circle and want to find the circumference?

circumference of a circle = pi * diameter.


What is the formula to find circumference when you are given the radius?

To find the circumference of a circle the formula is: 2*pi*radius or diameter*pi


Who discovered the formula of how to find out the circumference of a circle?

Archimedes


What is the formula to find the circumference of a circle with the raduis given?

Circumference of a circle: 2 x pi x radius.


What is the circumference of a circle with a diameter of 18 in.?

The circumference of a circle with a diameter of 18 inches is 56.5 inches.


What is the formula to find the circumference of a circle with the diameter given?

Circumference = (diameter) multiplied by (pi)


What formula will you use to find the circumference of a circle whose diameter is 2.2h?

Circumference of a circle = pi*diameter or 2*pi*radius