How to Calculate the Circumference of a Circle: Formulas and Examples

circumference

the distance around a circle

Circumference refers to the distance around the outside of a circular object or shape. To find the circumference of a circle, you need to use the formula:

Circumference = 2 π r

Where π is a mathematical constant approximately equal to 3.14, and r is the radius of the circle, which is the distance from the center of the circle to the edge.

Alternatively, you can use the formula:

Circumference = πd

Where d is the diameter of the circle, which is the distance across the circle through the center.

For example, if you have a circle with a radius of 5 inches, you can calculate the circumference using the first formula:

C = 2(3.14)(5) = 31.4 inches

Or you can use the second formula:

C = 3.14(2)(5) = 31.4 inches

Therefore, the circumference of the circle with a radius of 5 inches is 31.4 inches.

More Answers:
The Ultimate Guide to Accurately Measuring Angles in Geometry with the Protractor Postulate
Mastering Complementary Angles: Understanding their importance in Geometry, Trigonometry, and Real-Life Applications.
A Guide to Collinear Points Theorem in Geometry for Mathematical and Scientific Applications.

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