Pi Riddles
Do the Math
Pi Facts
Pi Formulas
Pi Puns
100
This is what you call a mathematician that takes over a ship.
What is a pi-rate
100
This is the circumference of a circle with a diameter of ten inches. (formula: 2 x pi x radius)
What is 31.4 inches
100
Pi is the ratio of a circle's circumference to this measurement.
What is the diameter
100
This is the value of pi, as you will use in Math.
What is 3.14?
100
This is the cutest pi there is!
What is a "Cutie Pi-e"
200
This is what a mathematician needs to fly his plane.
What is a Pi-lot's License
200
This is the circumference of a circle with a radius of four centimeters (formula: 2 x pi x radius).
What is 25.12 centimeters
200
This is a number that cannot be expressed as a fraction of two integers (in other words, a number with a decimal that never repeats or ends).
What is an irrational number
200
This is the formula for finding the area of a circle
What is radius time radius times pi or pi times r2
200
This is what you get when you divide a Jack-o-Lantern by its diameter.
What is Pumpkin Pi-e?
300
This is a mathematician's favorite dessert.
What is Pi-napple Pi-e
300
This is the circumference of a circle with a radius of 10 ft. (formula: 2 x pi x radius)
What is 62.8 ft.
300
This is the value of pi.
What is 3.14?
300
This is the formula to find the circumference of a circle.
What is 2 times pi times radius?
300
This is the slithery animal that loves Pi Day.
What is a Pi-thon?
400
This is what a mathematician does with her papers
What is a pi-le papers
400
This is the area of a circle with a diameter of four inches. (formula: pi x r2 )
What is 12.56 square inches
400
Pi got its name from the Greek word for this
What is perimeter?
400
If you know the diameter of a circle, this is how you'd find the radius.
What is by dividing the diameter in half?
400
This is why you should never talk to pi.
What is because it'll go on forever...
500
This is what the mathematician put into her gourmet cookies.
What is s -pi-ces
500
This is the area of a circle with a radius of five centimeters. (formula: pi x r2 )
What is 78.5 square centimeters
500
This the connection between Albert Einstein and Pi Day
What is a birthday on March 14
500
If you know the radius of a circle, this is how you would find the diameter.
What is by multiplying the radius by two, or doubling it?
500
Look at the picture. Name what you see:
What is octo-pi?