Q:
# How Do You Find the Perimeter of a Circle?

**To find the perimeter of a circle, also known as the circumference, plug the dimensions of the circle into the formula ((pi)(d).** This formula stands for pi (approximately 22/7) times the diameter of the circle (d).

Pi is an irrational number, which means it never ends. In math, 3.1415 is used as a general approximation of pi. The diameter is simply the length of the line that cuts through the center of the circle. This formula can also be written as 2 pi r. The radius (r) is simply half of the diameter, so multiplying it by two gives the diameter, making this equation equivalent to the first.

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Q:
## Why Is Pi Important?

A: If the circumference or the area of a circle is known, pi can be used to find the diameter and the radius of that circle. Likewise, if the radius or diamet... Full Answer >Filed Under: -
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## How Do You Find the Circumference of a Circle?

A: Find the circumference of a circle using the formula 2 x π x r. You need the value of π, or pi, and the radius of the circle. Full Answer >Filed Under: -
Q:
## How Should You Find the Circumference of a Circle?

A: The circumference of a circle is the distance around the outskirts of the circle. Knowing the radius of any circle allows one to calculate its circumferenc... Full Answer >Filed Under: -
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## How Do You Calculate Diameter?

A: To calculate the diameter of a circle, multiply the radius of the circle by 2. Diameter is the measure of the length of a straight line that passes through... Full Answer >Filed Under: