Pi Digits
Random Pi Facts
Circle Formulas
Pie Trivia
Questions
100

What are the first 5 digits pi?

3.1415

100

Who found pi?

Archimedes of Syracuse  

100

What is the formula for the circumference of a circle? 

*Answers may vary* C=2*pi*r  OR  C=pi*diameter

100

Who invented pie?

The Romans
200

What are the first 10 digits of pi?

3.141592653

200

What is the 314th Day of the year?

November 10th (excluding leap years, which the answer is November 11)

200

What is the formula for the area of a circle?

pi*r^2 
200

What are two of the most popular pies in America?

*Answers may vary* Apple, Pumpkin, and Sweet Potato

300

What are the first 15 digits of pi?

3.14159265358979

300

Who created/first used the pi symbol?

William Jones

300

What is the formula for the volume of a cylinder?

Volume= pi*radius^2*h     

(V=πr^2h)


300

What pie is the official pie of Florida?

Key lime pie

400

What are the first 20 digits of pi?

3.1415926535897932384

400

Which part of the legislative branch supported and recognized Pi Day?

House of Representatives

400

What is the formula for the surface area of a sphere?

A=4πr^2

area=4*pi*r^2

500

List 25 digits of pi or more?

3.141592653589793238462643383279502884197169399

500

What computer calculated pi to 1.24 trillionth digit in 2002?

the Hitachi SR 8000

500

What is the standard form equation of a circle?

(x-h)^2 + (y-k)^2 = r^2

500

What is the main ingredient of stargazy pie?

Sardines