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Divide the circumference by 2*pi will give the radius of the circle.

Q: How do you find the radius of you know the circumfrerence?

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

This is the equation for the circumference... C= 2 x r x pi r = the length of the radius pi = 3.14159 To find to circumference just find the radius of your cricle that you want to find the circumference of. then simply multiply 2 and 3.14159 by the radius and your circumference is the answer

You already know the radius.

double the radius or multiply by 2 the radius

It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.

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Multiply the radius by 2 and multiply the result by 3.141592654....(pi)

7*pi which is about 22 units of measurement

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

This is the equation for the circumference... C= 2 x r x pi r = the length of the radius pi = 3.14159 To find to circumference just find the radius of your cricle that you want to find the circumference of. then simply multiply 2 and 3.14159 by the radius and your circumference is the answer

Diameter * pi (3.14159...) = circumfrerence

You already know the radius.

double the radius or multiply by 2 the radius

at the equator.

It depends on the values you have. The base of a cylinder is a circle. If you know the circle's diameter, half it to find the radius. If you know the circle's circumference, divide by 2pi to find the radius. If you know the circle's area, divide by pi and take the square root to find the radius.

Diameter = 2*Radius

Well, if you know the diameter you divide that by two to get the radius.

If the radius is 42 meters, then you already know the radius.