Q: What ratio does pi come from?

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pi is the ratio of a circle's circumference to diameter, and that number just happens to be, always, 3.14159.... for an infinite number of digits

It was inititially recognised as the ratio between the radius and circumference of a perfect circle. The radius times "Pi" equals the circumference of a perfect circle.

There is no direct ratio. The area is related to the square of the radius by the factor "pi." A = (pi) r2 (Pi is about 3.1416)

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

Pi is the ratio of circumference to diameter. C/d=pi always!!!

Related questions

Any circle's circumference divided by its diameter has a value of pi

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

Pi is a unitless number, not a distance. Pi is a ratio it has no dimensions. Pi is the ratio of the circumference of a circle to its diameter.

pi is the ratio of a circle's circumference to diameter, and that number just happens to be, always, 3.14159.... for an infinite number of digits

It was inititially recognised as the ratio between the radius and circumference of a perfect circle. The radius times "Pi" equals the circumference of a perfect circle.

There are no degrees in pi, it is a ratio.

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

There is no direct ratio. The area is related to the square of the radius by the factor "pi." A = (pi) r2 (Pi is about 3.1416)

It is the 16th letter of the Greek alphabet. In mathematics it is the ratio of the circumference of a circle to its diameter

Pi is the ratio of circumference to diameter. C/d=pi always!!!

C = pi x D is the ratio of a circle's circumference to its diameter.

In a circle Pi it the ratio of the circumference to the diameter. That is to say, if C is the cirumference and D is the diamter of any circle, we have: Pi=C/D