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Take your diameter, divide by 2 to find the radius (r), and then plug that number into this equation: 2πR (2 x pi x radius)

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16y ago

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How do you find out the the diameter of a circle if knowing the circumference?

Divide the circumference by the value of Pi - that will give you the diameter.


How do you find circumference if you know diameter?

If you know the diameter and need the circumference you times the diameter of the circle by 3.14 also known as pie. That is how you get the circumference by only knowing the diameter. :)


How do you find diameter knowing the circumference?

Divide the circumference by 3.14159265 (3.14 for rough approximation) to find the diameter of a circle.


How do you find the circumference of a circle knowing only the diameter?

Circumference of a circle: pi times diameter


How do you get the circumference of a cicle knowing only the diameter?

circumference = diameter x pi (pi = 3.14159265 or 3.14 for rough approximation)


How do you find the diameter with only knowing the circumference?

Circumference = pi*d. So d = Circumference/pi


Why is it so important to know the circumference of a circle when finding the surface area of a cylinder?

It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.It is not. Knowing its radius or diameter will do just as well.


How do you find the radius of a circle only knowing the circumference?

The equation for finding the circumference of a circle is diameter times pi so reverse it to circumference divided by pi which leaves the diameter. The diameter is twice as big as the radius so divide the diameter by 2 and you will find the radius.


How do you find the diameter of a cylinder without knowing the radius or diameter?

Take the circumference divided by pi to find the diameter and divide the diameter by two to find the radius.


How do you calculate the radius of a turn based on a path or curve without knowing the circumference or diameter?

You cannot.


How do you find the diameter of a circle knowing only the circumference?

to find the diameter of a circle when you only have the circomference you: divide the circomference by pi (approx. 3.14)


How do you find the circumference if you know the radius?

Okay finding circumference from knowing the radius right? The radius is equal to half the diameter and circumference is equal to pi * diameter. So double the radius and multiply it by 3.14 then you will get the circumference!