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Because [ d = 2 r ].

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12y ago
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Q: Why can C Pi x d or C 2 x Pi x r be used to find circumference?
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Related questions

How is pi used to find the circumference of circles?

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


Why is pi used to find the circumference of a a circle?

Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.


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

Circumference=2*pi*radius


How do you find a radius if you have the circumference?

You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).You divide circumference / (2 x pi).


When given radius how do you find the circumference?

Circumference = 2 * radius * pi (where pi is approx = 3.14159)So Radius = Circumference / (2 * pi)


How do you find radius with only the circumference?

Circumference = 2*pi*radius So Radius = Circumference/(2*pi)


How do you find out the circumference of a circle?

Circumference = 2*pi*radius or diameter*pi


How you find circumference?

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


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

Circumference = 2 x Pi x Radius Radius = Circumference / (2 x Pi).


Is the radius one fourth of the circumference?

No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)


How do you find the area with the circuferenece?

Circumference = 2*pi*rr = circumference/2*pi---------------------------Now, you have radius.Area = pi*r2========


How can you find the diameter and the radius if the circumference is given?

Diameter = circumference/pi Radius = circumference/2*pi