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The answer depends on the formula for what: the radius, circumference, length of an arc, area, area of sector, area of segment: each one has a different formula.

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Q: What is the formula to be used if the diameter is given?
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Related questions

What is the formula for the diameter or a circle?

If you are given the radius of the circle, you can use the formula: diameter = 2*radius If you are given the circumference of the circle, you can use the formula: diameter = circumference/pi


What is the formula for calculating radius if you are given diameter?

divide diameter by 2


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

C=Pi x diameter


What is the formula to find the circumference of a circle with the diameter given?

Circumference = (diameter) multiplied by (pi)


What is the formula for finding circumferencE when only diameter is given?

Circumference of a circle = (pi) x (diameter)


What is the diameter if the circumference is 84?

To find the diameter of a circle when given the circumference, you can use the formula: circumference = π * diameter. Given a circumference of 84 units, you can plug this value into the formula and solve for the diameter. Dividing 84 by π gives you approximately 26.67 units as the diameter of the circle.


Formula to find circumferance given diameter?

Radius is half of the diameter, so you can easily come up with a formula: L = 0.25 * pi * d2


What is the formula to find the circumference of a circle when the diameter is given?

(pi)D


What is the formula for the area of the circle given the diameter?

in place of r (radius) write d/2 where d is diameter


What is the formula for the circumference of a circle given a radius?

Circumfrence=diameter X 3.14 (diameter=2 X radius)


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

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


If you are given a radius and asked to find the diameter what do you do?

You just multiply the given radius by 2. That is diameter is just double of the radius. This is universal formula.