Circle perimeter calculator

Perimeter is the distance around a two-dimensional shape.

Circle — is a part of a plane lying inside a circle. In other words, this is the geometrical location of the points of the plane, the distance from which to a given point, called the center of the circle, does not exceed a given non-negative number. The number is called the radius of this circle. If the radius is zero, then the circle degenerates to a point.

The perimeter of a circle is the distance around its outer edge. The formula for finding the perimeter of a circle is:

P = 2\pi r

where P is the perimeter, π (pi) is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.

Using our Circle Perimeter Calculator

Our Circle Perimeter Calculator makes it easy to find the perimeter of your circle. To use the calculator:

1. Enter the value of the radius in the box provided.
2. The calculator will automatically calculate the perimeter of your circle.

It's that simple! Our Circle Perimeter Calculator eliminates the need to manually calculate the perimeter of your circle, saving you time and effort.

Here's an example:

Example: Let's say you have a circle with a radius of 5 units. To find the perimeter of the circle, simply enter 5 into the box provided on our Circle Perimeter Calculator. The calculator will automatically calculate the perimeter, which is:

P = 2πr

P = 2 x 3.14 x 5

P = 31.4

So the perimeter of the circle is 31.4 units.

Circle Perimeter Formula

As mentioned earlier, the perimeter of a circle is equal to the product of the radius by two pi (3.1415) or if we have the diameter:

P= \pi*D

P= 2\pi*r

where P is the perimeter, π (pi) is a mathematical constant approximately equal to 3.14, D is the diameter of the circle, and r is the radius of the circle.

Using this formula, you can calculate the perimeter of any circle, as long as you know the value of the radius or the diameter.

Circle Perimeter Examples

Here are some examples of finding the perimeter of a circle using our Circle Perimeter Calculator:

Example 1

Find the perimeter of a circle with a radius of 8 units.

P = 2πr

P = 2 x 3.14 x 8

P = 50.24

Example 2

Find the perimeter of a circle with a radius of 12 units.

P = 2πr

P = 2 x 3.14 x 12

P = 75.36

Conclusion

Calculating the perimeter of a circle is an important skill in geometry. Our Circle Perimeter Calculator and formula make it easy to find the perimeter of your circle. Try it out for yourself and see how easy it can be!