What is PI
About PI
History
Fun Facts
Test Your Knowledge
100

Becasue it can't be expressed as a simple fraction.

Why is it called an "Irrational" number

100
3.14 or 22/7

What is the approximate value of PI

100

4,000 Years

How long has PI been known?
100

PI Recitation

What is the term for memorizing PI digits?

100

22/7

What is a commonly used fractional approximation for PI?

200

3.1415926535

What are the first 10 digits of PI?

200

March 14 is the day we celebrate this holiday

PI Day

200

Babylonians

Which ancient civilization first estimated the value of PI?

200

Yes, there is perfume's

Are there perfumes called PI

200

The ratio of a circle's circumference

What is the definition of PI?

300

PI is the ratio of a circle's circumference to its diameter

What is PI?

300

2 * PI * R = c

What is the formula for circumference? 

300

Swiss mathematician Leonard Euler

Who popularized the sign of PI?

300

2

What is the seventh digit of PI?

300

Leonhard Euler

Who is credited with popularizing the Pi symbol

400

Like the Pastry "Pie"

How is PI pronounced?

400

 Over 100 trillion

How many digits of PI have been calculated
400

The first letter of the Greek word "perimetros"

What does the name "PI" come from?

400

3.14597362834690178026517532338502565926

Is this true?

400

Archimedes

Which Greek is famous for accurate calculations of PI using polygons?

500

A = PI * R^2

What is the formula for a circle's area?
500

It is an irrational number, meaning it cannot be expressed as a simple fraction.

What type of number is PI?

500

In 1897, it attempted to legally define the value of Pi to be 3.2

What did Indiana try to do with PI?

500

Yes, it is used in this topic.

Is PI used in Physics

500

The 16th Letter

Which letter of the Greek alphabet is PI?