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the circumference is two times the radius, or 2r. so if the radius was 3, the circumference would be 6. if the radius was 4, the circumference is 8.

Q: What is the formula for finding the circumference with radius?

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2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi

The formula for the circumference of a circle is pi * diameter or (2 radius.)

It is the formula for finding the circumference of a circle which is the same as 2*pi*radius

Divide by 3.14 then by 2

circumference of a circle = 2*pi*radius or pi*diameter

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Divide the circumference by 2*pi because 2*pi*radius = circumference

Circumference = 2 x pi x radius

2*pi*radius = perimeter or circumference of a circle radius = circumference/2*pi

this is called finding the circumference. The formula is 2*pie*radius

The formula for the circumference of a circle is pi * diameter or (2 radius.)

It is the formula for finding the circumference of a circle which is the same as 2*pi*radius

pi x 2r

Divide by 3.14 then by 2

circumference of a circle = 2*pi*radius or pi*diameter

1/2 diameter or the circumference/pi/2

the Circumference is pi times 2 times radius If you know circumference then you can find the radius. once you know the radius just multiply by 2 to find the diameter.

Formula for finding the circumference of a circle: 2 multiplied by pi multiplied by radius