# How do you celebrate National Pi Day?

## How do you celebrate National Pi Day?

Play pi games.

- There are plenty of traditional games that are appropriate on Pi Day, like a piñata, a pie-eating contest, or a pie-in-the-face fundraiser.
- Answer math questions.
- Conduct a Pi Day Scavenger Hunt.
- Pi Day also happens to be the birthday of Albert Einstein.
- Have a pi memorization or recitation contest.

### What is Pi Day Wikipedia?

Pi Day is an annual celebration of the mathematical constant π (pi). Pi Day is observed on March 14 (3/14 in the month/day format) since 3, 1, and 4 are the first three significant digits of π. It was founded in 1988 by Larry Shaw, an employee of the Exploratorium.

**Who started Pi Day?**

physicist Larry Shaw

It defines as the ratio of a circle’s circumference to its diameter and the value for Pi is 3.14. diameter and its value is 3.14. The day was recognised in 1988 by physicist Larry Shaw as he organised a large-scale celebration at the San Francisco Exploratorium in the United States.

**What is Pi Approximation Day celebrated?**

Pi or pie, whether you’re a baker or a math whiz, today is your day — Pi Approximation Day on July 22 honors the concept of pi, which is denoted by the Greek letter pi and approximates to 3.14, in the most mathematically-pleasing way.

## What is pi used for?

In basic mathematics, pi is used to find the area and circumference of a circle. Pi is used to find area by multiplying the radius squared times pi. So, in trying to find the area of a circle with a radius of 3 centimeters, π32 = 28.27 cm.

### What is the formula for pi?

π

The formula for the value of pi is the ratio of the circumference of a circle to its diameter. In the ratio form, it is π = Circumference/Diameter.

**Why is pi so important?**

It’s the ratio of the circumference of a circle to its diameter—a number just a little bit bigger than three. The constant π helps us understand our universe with greater clarity. The definition of π inspired a new notion of the measurement of angles, a new unit of measurement.

**What are 5 facts about pi?**

Here are seven more:

- Pi is all encompassing.
- Pi is ancient.
- We’ve used computers to calculate pi to more than 22 trillion digits.
- Humans have memorized vast stretches of pi.
- Pi has a bit part in many books and movies.
- Even rocket scientists only need a bit more than a dozen decimal places.

## Why pi is a unique number?

Because of its many applications to physics, engineering, and architecture, mathematicians have long sought the value of π. However, since π is irrational, we cannot express it exactly as a fraction, and as a decimal, its expansion is infinitely long with no repeating pattern.

### What does the symbol pi mean?

The symbol used by mathematicians to represent the ratio of a circle’s circumference to its diameter is the lowercase Greek letter π, sometimes spelled out as pi, and derived from the first letter of the Greek word perimetros, meaning circumference.