Pi Day Fun Facts
Area of a Circular Pie
Circumference of a Circular Pie
Easy as Pie
Pi Puns
100

From what language does the π symbol originate?

Greek

100

What is the formula for the area of a circle? 

πr2

100

What is the formula for the circumference of a circle? 

2πr or πd

100

How many bakers does it take to bake a pi? 

3.14

200

How long is pi? 

It is infinite!

200

What is the area of a circle with a radius of 5 centimeters?

78.5 cm2

200

What is the circumference of a circle with a diameter of 10 centimeters

31.4 cm

200

What is a mathematician's favorite type of snake? 

A pi-thon

300

When is Albert Einstein's Birthday? 

March 14th (Pi Day!)

300

What is the area of a circle with a diameter of 4 inches?

12.56 inches2

300

What is the second most popular type of pie in the United States? 

Pumpkin Pie

300

What do you call a mathematician that takes over a ship? 

A pi-rate

400

When was Pi Day first celebrated Nationally? (within the decade)

1988

400

What is the diameter of a circle with a circumference of 28.26 feet?

9 feet

400

What do you get when a bunch of sheep stand around a circle? 

Shepherd's pi

500

Name the first 8 digits of pi

3.1415926

500

Why do you never talk to pi? 

He'll go on forever!