Pi Meanings
Albert Einstein
Happy Pi Day!
Pi Trivia
Pi Formulas
100

What is the definition of pi?

Ratio of a circle's circumference to its diameter

100

What two countries did Einstein have citizenship in?

Switzerland and the US

100

What date is Pi Day celebrated on?

March 14

100

The value of pi fits into this classification of numbers.

Irrational

100

This is the formula to find the circumference of a circle

2 pi r

200

An approximate value of pi in fractional form.

22/7

200

What birthday gift did Albert Einstein famously receive at a very young age?

A compass

200

When is Tau Day celebrated?

6/28

200

The U.S. state that used a bill to legislate the value of pi.

Indiana

200

This is the formula for finding the area of a circle

pi r^2

300

What letter is pi when transliterated into English?

p

300

The year that Einstein died.

1955

300

What time could Pi Day be celebrated on?

1:59

300

Who is known as the "Prince of Pi"?

Larry Shaw

300

Given the circumference, this is the formula to find the diameter

Circumference divided by pi

400

Pi is the _-th letter of the Greek alphabet

16

400

The famous picture of Einstein sticking his tongue out was taken during his ____nd birthday.

72

400

In 2015, the date for Pi Day (3/14/15) was accurate to 5 decimal places (3.1415). When is the next time that this will occur?

March 14, 2115

400

This mathematician first introduced the number pi in 1706.

William Jones

400

Given the circumference, this is the formula to find the radius

Circumference divided by pi, divided by two

500

Approximate value of pi correct to 20 decimal places

3.14159265358979323846

500

The year that einsteinium was discovered and named after Einstein.

1952

500

The 314th day of the year, i.e. another day to celebrate Pi Day

November 9th or 10th

500

The name of the computer that calculated pi to the 1.24th trillionth digit in 2002.

Hitachi SR 8000

500

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

Square root of the area, divided by pi