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How do you find the circumference if you know radius?

Updated: 8/20/2019

Wiki User

∙ 8y ago

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Circumference of a circle = 2*pi*radius

Wiki User

∙ 8y ago

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Wiki User

∙ 8y ago

Multiply the radius by 2*pi (or tau).

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Related questions

What formula is used to find the circumference when you know the radius?

Circumference=2*pi*radius

What is the formula for finding the diameter of a circle when the circumference is given?

C = pi d By algebraic rearrangement d = C / pi

When you know the circumference of a circle how do you find the diameter?

If you know the circumference of a circle, you can find the radius by dividing the circumference by the value of Pi (3.14159...)

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

Radius (not raduis) =circumference/(2*pi)

How do you find the radius of a circle if you know the circumfrence?

radius = circumference/(2*pi)

How do you find the radius of a circle if you know the circumferance?

radius = circumference/2*pi

How do you find the length of of the radius of a circle?

You can either measure it, or calculate it if you know the diameter (radius = diameter / 2), or the circumference (radius = circumference / (2pi)).

What is the equation for finding the radius of a sphere when you know the circumference?

The equation for circumference is C=2(pi)(r) where C is the circumference and r is the radius. You can find the radius by plugging in the circumference into this equation and solving the equation.

How do you find the radius of a circle if you dont know the circumference?

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

The radius of the circle is 5inches what is the circumference?

The circumference of a circle that has a radius of 5 inches is 10 X pi or approximatly 31.415926535897932384626433832795. If you know the radius you can find the circumference by multiplying it by 2(pi)

How do you find diameter and circumference?

Where C=circumference, r= radius and d=diameter To find circumference: C=2 x pi x r or you can use the formula C=pi x d To find diameter just multiply the radius by 2 if you know what the radius is. If you do not know the radius, but you know the circumference and need diameter use the following formula: C/pi=d Happy Computing!!!

How do you find the radius if circumference is given?

Divide the circumference by 2PI to find the radius. ( C = 2PI*Radius)

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