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Because the ratio of the circumference of any circle to its diameter is pi.

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12y ago

Because the ratio of the circumference of any circle to its diameter is pi.

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Q: Why is pi used in circle?
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Related questions

Pi can be used to calculate the blank of a circle?

Pi can be used to calculate the area of a circle Pi can be used to calculate the circumference of a circle


Why is pi used in every circle formula?

By definition Pi is the relation between the radius and circumference of a circle.


When is pi typically used in mathematics?

Pi is used to find area and circumference of a circle.


How is pi r squared used?

It is used to find the area of a circle as pi*radius2


What shape is Pi used in?

Pi can be used to find a circle, For the circumference-Pi x D, or for the radius Pi x r2


Where can you see a pi?

It is a Greek letter used to represent the ratio of the diameter of a circle to its circumference so you can see 'pi' (not a pi)in any circle.


How is pi used to determine the area of a circle?

Area of a circle equals pi (3.14) times the radius squared.


How have you used pi?

To find out the area of a circle.


How is pi used in todays world?

Pi is used in nearly every branch of math. If you need to do anything with a circle, pi was used to make that circle. Any measurement of a circle, cylinder, sphere, etc involves pi. Pi is incorporated into the GPS. All kinds of things use pi. A fun fact for pi: the actual length of a river compared to the straight distance from source to mouth will yield pi.


What is the math subject that the pi is mainly used in?

well pi is used to find the area of a circle A=pi x the radius squared


How can the circumference of a circle be calculated?

The circumference of a circle can be calculated by multiplying pi by the diameter of the circle. For example if the diameter is 10 then the calculation will be pi x 10 = answer. The most commonly used value for pi is 3.14


Where and how pi it is used today?

Pi is used in many ways today. The simplest way it to find the circumference (the perimeter) of a circle or the area (amount of space inside) of a circle.