Pi Facts
Pi Puns
Pi Formulas
All About Al
Pi Riddles
100

The approximate value for Pi to two decimal places

What is 3.14?

100
You call this a number that can't keep still

What is a roamin' numeral?

100

This is the formula to find the circumference of a circle. 

What is pi * diameter?

100

Born on Pi Day

Who is Albert Einstein?

100

The official animal of Pi Day

What is a PI-thon?

200

This Chamber of Congress recognizes March 14 as Pi Day

What is the House of Representatives?

200

This was Si Isaac Newton's favorite dessert

What is Apple Pi?

200

Given the area of a circle, this is the formula to find the radius. 

What is the square root of the area divided by pi?

200

Einstein was born in this country famous for their great beer!

What is Germany?

200

Teachers from Georgia like to eat this for dessert.

What is Peach Pi?

300

The ratio of the circumference of a circle and its diameter

What is Pi?

300

The reason math books are always unhappy

What is they have a lot of problems?

300

This is the formula for the circumference of a circle. (Accept two answers)

What is C= 2 * pi * r OR C= pi * diameter?

300

Einstein is best known for the theory of relativity in which this equation is used

What is E = mc2?

300

The reason a mathematician might be afraid of negative numbers.

What is they will stop at nothing to avoid them?

400

These are the first fifteen digits of Pi.

What are 3.14159265358979?

400

The reason the 30-60-90 triangle married the 45-45-90 triangle 

What is they were RIGHT for each other?

400

This is the formula for the area of a circle.

What is A= pi * r * r OR pi * r squared?

400

Pathologist Thomas Harvey kept this part of Einstein's body after the rest of the body was cremated

What is his brain?

400

A statistician drowned crossing a river because of this. 

What is the river was three feet deep on average?

500

This person first used the symbol for Pi.

Who is William Jones?

500

The reason you divide sin by tan

What is 'just cos'?

500

This is the volume of a cylinder.

What is V = pi * r squared * h?

500

In this year, Einstein won a  Nobel Prize for Physics for his explanation of the photoelectric effect. 

What is 1921?

500

This is what you get when you take green cheese and divide its circumferenceby its diameter.

What is a Moon Pi?