Pi Riddles
Do the Math
Pi Facts
Pi Formulas
Pi Puns
100

What you call a mathematician that takes over a ship.

What is a pi-rate?

100

The circumference of a circle with a diameter of ten inches.

What is 31.4 inches?

100

Pi is the ratio of a circle's circumference to this measurement.

What is the diameter?

100

The formula to find the circumference of a circle.

What is Pi times the diameter?

100

This is the cutest pi there is.

What is a "Cutie Pi-e"?

200

What a mathematician needs to fly his plane.

What is a Pi-lot's License?

200

The circumference of a circle with a radius of four centimeters.

What is 25.12 centimeters?

200

A number that cannot be expressed as a fraction of two integers.

What is an irrational number?

200

The formula for finding the area of a circle.

What is radius times radius times pi? (Or radius squared times pi)

200

What you get when you divide a Jack-o-Lantern by its diameter.

What is Pumpkin Pi-e?

300

A mathematician's favorite dessert.

What is Pi-neapple Pi-e?

300

The diameter of a circle with a circumference of 28.26 ft.

What is 9 ft?

300

Pi got its name from the Greek word for this.

What is perimeter?

300

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

What is circumference divided by pi?

300

What you get when you take green cheese and divide it by its diameter.

What is Moon Pi-e?

400

A mathematician's ungraded assessments

What is a pi-le of papers?

400

The area of a circle with a diameter of four inches.

What is 12.56 square inches?

400

He is credited with determining a remarkably accurate approximation of pi in earliest times.

Who is Archimedes of Syracuse?

400

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

What is circumference divided by pi divided by two?

400

What you get when you take the sun and divide it by its diameter.

What is Pi-e in the Sky?

500

What the mathematician put into her gourmet cookies.

What are s-pi-ces?

500

The area of a circle with a radius of five centimeters.

What is 78.5 square centimeters?

500

This the connection between Albert Einstein and Pi Day.

What is a birthday on March 14?

500

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

What is the square root of the area divided by pi?

500

The kind of snake a mathematician owns. 

What is a pi-thon?