# Author's software

#### Being tested

PI

Specifies the ratio of the circumference to its diameter.

Writing:

pi

Value (approximately):

3.141592

Formula:

The accuracy of the display can be changed in the settings.

The number "pi" is one of the most famous mathematical constants and is indicated by the symbol ?. Its value is approximately 3.14159, but in fact the number "pi" is an infinite and random decimal fraction.

The use of the number "pi" is observed in many areas: from geometry to physics. In geometry, "pi" is used to calculate the circumference or area of a circle. To do this, it is enough to multiply the diameter of the circle by "pi" or the square of the radius by "pi". The use of "pi" is also present in the calculation of the volume and area of many other geometric shapes, for example, spheres, cones and cylinders.

One of the most famous examples of using the number "pi" is Euler's formula, which connects five fundamental mathematical constants: "pi", one, zero, exponent and complex number i. Euler's formula is written as e^i? + 1 = 0 and is an example of a mathematical language that connects different areas of mathematics into one expression.

The number "pi" also has an important role in physics, especially in the fields related to vibrations and waves. For example, "pi" is present in the formula for calculating the oscillation period of a spring or wave on a string. Most physical processes and phenomena can be described using mathematical equations in which the numbers "pi" or its derivatives play an important role.

In addition, "pi" is also found in other sciences and engineering. For example, in probability theory, "pi" is used to calculate the probability of events on a random surface, and in electrical engineering, "pi" is introduced to calculate inductance or capacitance in electrical circuits.

The use of the number "pi" is not limited only to scientific fields. In art, design and architecture, pi serves as a source of inspiration for creating harmonious and proportionate shapes and structures.

The number "pi" has a significant impact on various aspects of our lives and scientific progress. Its unique mathematical properties and wide application make it an integral part of the world of numbers and formulas. All this makes the number "pi" one of the most amazing and interesting mathematical constants.