## What are 5 important 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.

### Did you know facts about pi?

14 delicious facts about Pi Pi Day (March 14) is also Albert Einstein’s birthday! Many mathematicians claim that it is more correct to say the a circle has an infinite number of corners than to view a circle as cornerless. Stop and think about that for a second. Pi was first calculated by Archimedes of Syracuse.

#### What is pi birthday?

March 14 marks Pi Day, an annual celebration of the mathematical sign pi. Founded in 1988 by physicist Larry Shaw, March 14 was selected because the numerical date (3.14) represents the first three digits of pi, and it also happens to be Albert Einstein’s birthday—the perfect pi-incidence.

**What was 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.

**Why is March 14th pi?**

Every year on March 14, the world celebrates Pi Day to recognise the mathematical constant, Pi. 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 following number is 14, hence the March 14 date.

## What is the pi value?

approximately 3.14

Succinctly, pi—which is written as the Greek letter for p, or π—is the ratio of the circumference of any circle to the diameter of that circle. Regardless of the circle’s size, this ratio will always equal pi. In decimal form, the value of pi is approximately 3.14.

### Why is pi so special?

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 can you do with a Pi Day worksheet?

The worksheets on this page can be used to teach students about the number pi. Sing the “Pi Song” with your class. It’s an adorable song to the tune of “The Wheels on the Bus.” In this activity, students use a tape measure to determine the circumference and diameter of circles.

**How to calculate pi on Happy Pi Day?**

In this activity, students use a tape measure to determine the circumference and diameter of circles. Then they use their data to calculate pi. This is a series of short-answer questions that relate to pi, circles, and circumference. Rearrange the letters in the words “Happy Pi Day” to make as many different words as possible.

**When is Pi Day in the United States?**

Everyone loves pi – and we enjoy celebrating the most delicious number of all every year on March 14 (3.14). The worksheets on this page can be used to teach students about the number pi.

## How to write happy Pi Day for kindergarten?

This is a series of short-answer questions that relate to pi, circles, and circumference. Rearrange the letters in the words “Happy Pi Day” to make as many different words as possible. This version was written specially for students in kindergarten through second grade, and includes primary-ruled paper.