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Circumference = Pi x Diameter

(Pi equals 3.14)

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13y ago
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13y ago

circumference divided by pi (about 3.1416) = diameter

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14y ago

c=pi x d

c=circumference

pi=3.141592654

d=diameter

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11y ago

Circumference ÷ Pi = Diameter

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Q: What is the equation to get circumference of a circle if you have diameter?
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If you Give a circle with a diameter of 4 what is the circumference?

the equation for the circumference of a circle is 2*radius*pi, or since the radius is half of the diameter 2*radius=diameter, we can simplify the equation to the circumference of a circle=diameter*pi


If the diameter of a circle is 5 what is the circumference?

The equation for determining the circumference of a circle is circumference = pi x diameter. So if the diameter is 5, then the circumference is pi * 5 = 15.71


How does the circumference of a circle change if you double its diameter?

Since the equation for circumference is pi*d then if you double the diameter the circumference will be doubled.


What is the mathematical equation you generally use to find the circumference of a circle when you know the diameter?

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


What is the equation for determining radius of a circle if you have the circumference?

Circumference = Diameter multiplied by Pi Diameter = Circumference divided by pi Radius = Diameter divided by 2.


What is the equation to find the perimeter of a circle?

Circumference ("perimeter") of a circle = (pi) x (diameter of the circle)


Diameter is 2.5 inches what is circumference?

To get the circumference of a circle, the equation is pi * diameter. So, in this case, it is 2.5 * pi (3.14), or roughly 7.85. So, the circumference of the circle is about 7.85 inches.


What is the equation for the diamiter of a circle?

Diameter = 1/2 of the circle's radius. Diameter = 2 times the square root of (the circle's area/pi) Diameter = the circle's circumference/pi


What is the equation for the circumference and radius?

The equation for circumference is 2(3.14)(r) or 3.14(d) where r=radius and d=diameter. The radius of a circle is half of the circumference, or the distance across the interior of a circle.


If the diameter of the circle is 69mm then what is the circumference of this circle?

If the diameter of a circle is 69mm then the circumference is: 216.8mm (diameter x pi = circumference).


Is circumference of a circle the same as the perimeter of a circle?

Yes it is, because both of them are just the distance around the circle, the equation forthe circumference is pi x Diameter.


The wheels circumference is how many times as big as its diameter?

A wheel is in the shape of a circle. The formula for the circumference of a circle is 2πr where r is the radius. But, the diameter of a circle is twice the radius so this equation can be written, Circumference = πd where d is the diameter. The Circumference is therefore π times as big as the diameter, π = 3.142 or 22/7 approx.