Pi approximation Day is observed every year on 22 July. The day is observed to value and showcase the importance of mathematical constant π (pi).

Pi is defined as the ratio of a circle's circumference to its diameter and in mathematics its value is approximately equal to 3.14159. Pi is used for calculations in both mathematics and physics.

On the occasion of Pi approximation Day, people frequently participate in a variety of pi-related activities such as reciting the pi digits, participating in competitions or quizzes with a pi theme, baking pies (both real pies and math-themed pies), discussing interesting pi tidbits, and many more.

Let us read about the Pi Approximation Day 2023 history, significance, and other important details.

## History and Significance of Pi Approximation Day

In 1706, mathematician Leonhard Euler designed the mathematical constant Pi. The Pi Approximation Day is recognised on 22 July because its rational approximation is equal to 22/7 and when 22 July is placed in date/month format it appears as 22/7.

Besides 22 July, the Pi Day is celebrated on 10 November, which is the 314th day of the year, and 14 March which looks like 3/14 in month/date format. Both these dates resemble the value of Pi which is approximately 3.14159.

The significance of celebrating the Pi Approximation Day is to highlight the importance of Pi in both Mathematic and Physics calculations. Most of the geometric calculations are impossible to determine without using Pi. The area and volume of many geometric and trigonometric shapes is calculated using the pi constant.

## What Is the Theme of Pi Approximation Day 2023?

The theme of Pi Day celebrated on 14 March 2023 was 'Mathematics for Everyone." The theme of Pi Approximation Day 2023 is not known yet.

## Why is Pi Approximation Day celebrated?

The Pi Approximation Day is celebrated to create awareness of Pi, a mathematical constant used in determining the value and area of different geometric figures and shapes.