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

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The circumference, C, of a circle is given by the formula

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

(pi)D

C=Pi x diameter

diameter = circumference/pi (pi = 3.14159265 or 3.14 for rough approximation).

Related questions

If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi

The circumference, C, of a circle is given by the formula

Circumference = (diameter) multiplied by (pi)

Circumference of a circle = (pi) x (diameter)

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

(pi)D

C=Pi x diameter

diameter = circumference/pi (pi = 3.14159265 or 3.14 for rough approximation).

It is not clear whether you want the formula of some aspect (area or circumference) of a circle when given its radius or a formula for its radius when given some characteristic measure of the circle.

The perimeter of a circle is its circumference

To find the radius of a circle when given the circumference, you should start with the formula for circumference, which is this: circumference = 2*pi*radius To solve for the radius, you would the have to divide the circumference by 2*pi leaving you with a formula like this: radius = circumference/(2*pi) pi≈3.14159

We've not been given a circle.

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