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

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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

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

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

Divide by 3.14 then by 2

pi x 2r

1/2 diameter or the circumference/pi/2

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

The formula for finding the radius of a circle is circumference divided by double of pi. If area is given instead of circumference, the radius may be found by dividing the area by pi, then finding the square root of the resultant quotient. It is also equal to half of the diameter, or the diameter divided by 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.

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