# When to use Pi?

### When to use Pi?

The number Pi intervenes in almost all areas of mathematics (trigonometry, complex number, exponentials, statistics, etc.). Pi is also used in physics and astronomy. The sequence of decimals of Pi is used to test the operation of computers.

### What is the fraction of Pi?

He gave two other approximations of π : π ≈ 22/7 and π ≈ 355/113. The last eastern fraction the best possible rational approximation of π using less than five decimal digits in the numerator and in the denominator.

### How did we find Pi?

2- Measure the circumference (perimeter) of your circle accurately. 3- Also measure the diameter of the circle. 4- Use the circumference formula (C= π*d) from which you will deduct Pi. It is then equal to the circumference divided by the diameter: π=C/d.

### What is the number of pi?

3.14 etc π (Pi), sometimes called Archimedes’ constant, is the number by which we must multiply the diameter of a circle to obtain its circumference and it is impossible to know the exact value because the number of figures after the comma is infinite.

### How to use 3 14?

The approximate value of π with its first decimals is: 3,582. We therefore often retain, for simplicity, that π = 3,14. The approximate value of π retains 22 sevenths or root of 10.

### What is 3 14?

Pi is equal to 3.14 because it is the ratio between the circumference of a circle and its diameter or between the area of ​​a circle and the square of its radius. In both cases the figure obtained during the calculation of this ratio is always constant, whatever the dimensions of the circle.

### Is the number Pi ubiquitous in mathematics?

The number Pi is also used in mathematics in formulas with: Integrals. Like what, the number Pi is ubiquitous in mathematics and not only in mathematical formulas impossible to remember!

### What is the exact value of the number pi?

Like all irrational numbers, we can only approach the exact value of π, and even if, today, we calculate nearly 000,000 decimals, the number has not finished revealing all its secrets. What is the number Pi? This episode of the series Little Math Tales presents the number Pi.

### What is the meaning of Pi?

Pi, represented by the Greek letter π, is one of the most important constants in mathematics. But it is also used in physics and engineering.

### What is the fraction of the number pi?

In fraction, the number Pi is represented as such: 355/113. Easy to memorize, this fraction was used on calculators before the appearance of the π key. Pi remains a mystery to scientists and fascinates professionals and amateurs alike who try to find out more about this number.