Which big brother knows about pi?!

Pi (Pi) is the ratio of the circumference of a circle to its diameter, generally represented by Greek letters, and is a mathematical constant that is common in mathematics and physics. It is also equal to the ratio of the area of the circle to the square of the radius. It is the key value to accurately calculate the geometric shape of the circumference, area of the circle, and the volume of the sphere.

In analytics, it can be strictly defined as the smallest positive real number x satisfying sin x = 0.

Pi is represented by the Greek letter (pronounced pài) and is a constant (approximately equal to, representing the ratio of the circumference to the diameter of a circle. It is an irrational number, i.e., an infinite non-cyclic decimal. In daily life, it is common to approximate the approximate rate of pi.

Ten decimal places is sufficient for general calculations. Even the most sophisticated calculations for engineers or physicists can be taken to a few hundred decimal places.

Pi: The ratio of the circumference to the diameter of a circle.

Pi is a mathematical constant that represents the ratio of the circumference to diameter of a circle, expressed in Greek letters. It is also equal to the ratio of the area of the circle to the square of the radius, and the approximate value is approximately equal to, which is the key value for accurately calculating the geometric shapes such as the circumference of the circle, the area of the circle, and the volume of the sphere.

Two things to know about pi: the ratio of the circumference of a circle to its diameter, called pi, is represented by letters;

is an infinite non-cyclic decimal number, and when calculating, it is generally taken as an approximate value;

Therefore, the answer is: the ratio of the circumference of the round silver stove to the diameter of its call tomb, which is called pi, which is represented by words and Qi Mu; is an infinite non-cyclic decimal number, and when calculating, it is generally taken as an approximate value;

Pi, in Greek lettersIt is the ratio of the circumference of the garden to the diameter, and it is also equal to the ratio of the area of the garden to the square of the radius. Pi is a constant, it is an "irrational number (five lines do not circulate decimals)" is about equal to, in daily life, the value of pi can be used to approximate calculations, or more accurate decimal point multi-digit values can be used for engineering calculations, etc. The value of pi with a value of 100 decimal places to 1 million places can be searched on the Internet.

Pi is an infinite non-cyclic decimal number, and Zu Chongzhi was the first to calculate pi with circumcision.

What is Pi?

Pi is a constant and represents the ratio of circumference and diameter. It is an irrational number, i.e. an infinite non-cyclic decimal. However, in daily life, it is usually used to represent pi to make calculations, and even if engineers or physicists want to make more precise calculations, the value is only about 20 decimal places.

What is ?It is the sixteenth Greek letter, which originally had nothing to do with pi, but the great mathematician Euler began to use in 1736 to represent pi in letters and **. Since he was a great mathematician, people used it in the same way to express pi. But in addition to representing pi, it can also be used to denote other things, and it can also be seen in statistics.

The history of the development of pi.

In history, many mathematicians have studied pi, including Archimedes of Syracuse, Ptolemy, Zhang Heng, Zu Chongzhi and so on. In their own countries, they used their own methods to calculate the value of pi. The following is the research results of pi in various parts of the world.

Asia China:

During the Wei and Jin dynasties, Liu Hui used the method of gradually increasing the number of sides of a regular polygon to approximate the circumference (i.e., circumcision) to obtain an approximate value.

During the Han Dynasty, Zhang Heng derived the square divided by 16 equal to 5 8, that is, equal to the square of 10 (approximately. Although this value is not very accurate, it is easy to understand, so it has also become popular in Asia for a while.

Wang Fan (229-267) discovered another value of pi, which is, but no one knows how he found it.

In the 5th century AD, Zu Chongzhi and his son used a positive 24576 polygonal shape to find pi about 355 113, which is less than 1 in 800 million compared with the true value. It took a thousand years to break this record.

India: Around 530 A.D., the mathematician Ayebodo used the circumference of a 384-sided polygon to calculate that the rate of pi was about .

Brahmanguma used another method to deduce the square root of pi equal to 10.

European Fibonacci calculates that pi is about.

Veda used Archimedes' method to calculate < <

He was also the first to describe pi in terms of an infinite product.

Rudolf Vankoren calculates pi with 35 decimal places from a polygon with more than 320000000000 sides.

Pi is an infinitely cyclic decimal number, which is about three points one four one five nine two six. The following is a further explanation of pi: 1. It is the ratio of the circumference of the circle to the diameter of the spring.

5. The famous mathematician Zu Chongzhi in the Northern and Southern Dynasties further obtained accurate to decimals