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Pi Meanings
Pi Day
Pi Formulas
Pi Humor
Pi Trivia
100
The definition of pi
What is the ratio of a circle’s circumference to its diameter?
100
Pi Day is celebrated on this date.
What is March 14? (3.14) ?
100
The formula for area of a circle
What is A=πr^2?
100
This is what you get when you divide the circumference of a jack-o-lantern by its diameter.
What is pumpkin pi?
100
The value of pi fits into this classification of numbers.
What is irrational?
200
An approximate value of pi, correct to two decimal places
What is 3.14 ?
200
This famous mathematician’s birthday is on the same date as Pi Day.
Who is Albert Einstein?
200
The formula for circumference of a circle
What is C = 2πr or C = πd?
200
This is what you get when you divide the circumference of green cheese by its diameter.
What is moon pi?
200
The height of which animal (from foot to shoulder) is equal to 2π times the diameter of its foot
What is an elephant?
300
An approximate value of pi, in fractional form
What is 22/7?
300
The best time of day to celebrate Pi Day, according to the third, fourth, and fifth digits following the decimal
What is 1:59?
300
The formula for volume of a cylinder
What is V = πr^2h ?
300
This is what you get when you divide the circumference of the sun by its diameter.
What is pi in the sky?
300
The U.S. state in which a bill was introduced to legislate the value of pi
What is Indiana?
400
∏ is a letter from the alphabet of this language
What is Greek ?
400
A date during the summer which could be another good time for Pi Day
What is 22nd of July? (22/7) ?
400
The formula for surface area of a cylinder
What is S = 2πrh + 2πr2h?
400
This is what you get when you divide the circumference of a bowl of ice cream by its diameter.
What is pi a’ la mode?
400
The number of centuries for which the letter pi has been used to represent this special mathematical ratio
What is 3? (This use of the letter pi first showed up in mathematical writings in about 1706.)
500
∏ is the ____ letter of the alphabet. (1st, 2nd, 3rd, etc.)
What is 16th?
500
Another date to celebrate Pi Day—the 314th day of the year
What is November 10 (or November 9 in leap years)?
500
The formula for volume of a cone
What is V = 1/3πr^2h?
500
This is what you get when you divide the circumference of a bovine by its diameter.
What is cow pi?
500
One of two ancient countries in which a value for pi was probably first used to calculate the area of a circle
What is Babylon or Egypt? (probably as early as 2000 or 3000 BC)