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The circumference of a circle divided by its diameter is equal to pi.

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Q: What are two measurements that make up the ratio of pi?
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Why is pi 3.14 and not other numbers?

The ratio of the circumference of a circle to its diameter is a constant, irrespective of the actual measurements. This ratio is called pi and is 3.1415...


What does it mean when it is said that pi is a ratio?

It means that it is the result of dividing two quantities. In this case two measurements: the circumference of the circle divided by the diameter of the circle.


What did people use pi for?

Pi is the ratio of a (perfect) circle's circumference to its diameter. It was, and still is, used to make more accurate measurements of things containing circles or parts of circles. Pi also shows up in trigonometry and higher maths.


What are two measurements that can be found using pi?

Diameter and volume


What two measurements can you divide in a circle that will always give you an answer of pi?

They are: circumference/diameter = pi and circumference/2*radius = pi


What is pi to 3 decimal places?

Pi has been updated recently due to historically inaccurate measurements. Pi is equal to approximately 3.28167


How do you make a sentence for pi?

Pi is a dimensionless number, being the ratio of the circumference of a circle to its radius.


What is pi a ratio of?

Pi is the ratio of the circumference of a circle to its diameter.


Why is a ratio expressed without writing units?

In a ratio of measurements for the same kinds of units, units get canceled. For example, in a ratio of 3 meters / 8 meters, you can cancel the "meters" in the numerator and the denominator. An important ratio is pi, which is the ratio of the circumference of a circle to its diameter. If you measure the circumference in feet, and the diameter in feet, then divide circumference/diameter, then the result is the dimensionless quantity 3.14159265.... If you go back and measure both in meters, you get the same answer.In a ratio of two measurements, the units cancel, so it makes no difference whether you write the units, or not.


Why pi is a rational or an irrational number?

Pi is an irrational number because it cannot be expressed as a ratio of two integers.


What does 'pi' mean in math terms?

In math terms, pi, means 3.14, which is a everlasting decimal, that is just rounded to make your math easier. So pi, means 3.14 in math terms.


Does anyone really no what pi represents?

Yes, many people know what it represents; pi is the Greek symbol for the "circular constant", the ratio between the circumference and the diameter, which can be used to find the perimeters, areas, volumes and surface areas of many shapes given one or two particular measurements.