## How do you find the circumference of a circle with the diameter?

The circumference = π x the diameter of the circle (Pi multiplied by the diameter of the circle).

Simply divide the circumference by π and you will have the length of the diameter.

The diameter is just the radius times two, so divide the diameter by two and you will have the radius of the circle!

## How do we find the diameter of a circle?

To calculate the diameter of a circle, multiply the radius by 2. If you don’t have the radius, divide the circumference of the circle by π to get the diameter. If you don’t have the radius or the circumference, divide the area of the circle by π and then find that number’s square root to get the radius.

## How do you find the circumference of a circle without the diameter or radius?

To work out the circumference of a circle if you know the radius, use the formula 2πr, where π is 3.14 and r is the radius. If you know the diameter instead of the radius, use the formula πd, where d is the diameter, to get the circumference.

## What is the diameter of a circle calculator?

You can also use it to find the area of a circle: A = π * R² = π * 14² = 615.752 cm² . Finally, you can find the diameter – it is simply double the radius: D = 2 * R = 2 * 14 = 28 cm . Use our circumference calculator to find the radius when you only have the circumference or area of a circle.