## How do you find the radius when given the circumference?

Find Radius from Circumference of Circle –

## How do you find the radius with the diameter and circumference?

Finding the Diameter or Radius

The circumference of a circle is equal to pi times the diameter. The diameter is two times the radius, so the equation for the circumference of a circle using the radius is two times pi times the radius.

## What is the diameter of a 6 inch circumference?

Circumference & Areas

Size in Inches | Circumference Inches | Area in Square Inches |
---|---|---|

5 1/2 | 17.280 | 23.760 |

5 3/4 | 18.060 | 25.970 |

6 | 18.850 | 28.270 |

6 1/4 | 19.640 | 30.680 |

36 more rows

## What is circumference formula?

Half of the diameter, or the distance from the midpoint to the circle border, is called the radius of the circle (r). The circumference of a circle is found using this formula: C=π⋅dorC=2π⋅r. Example.

## What is the formula to find radius?

The two formulas that are useful for finding the radius of a circle are C=2*pi*r and A=pi*r^2. We use algebra skills in solving for our variable r. We know that the constant pi is always 3.14. Another word related to the radius is diameter, which is always twice the radius.

## How do you find the diameter with the area?

**Calculate the Diameter of a Circle, from Its Area**

- Divide the area (in square units) by Pi (approximately 3.14159). Example: 303,000/3.14159 = 96447.98.
- Take the square root of the result (Example: 310.56). This is the radius.
- Now double the radius to get the diameter (Example: 621.12 meters).