Pi Riddles
Do the Math
Pi Facts
Pi Formulas
People of Pi
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 10 inches.
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 formula to find the circumference of a circle.
What is 2 times Pi times radius? or What is Pi times the diameter?
100
Albert Einstein's birthday
What is March 14?
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 4 centimeters
What is 25.12 centimeters
200
This is a number that cannot be expressed as a fraction of two integers.
What is an irrational number?
200
This is the formula for finding the area of a circle.
What is radius squared times pi?
200
He is credited with determining a remarkably accurate approximation of pi in Ancient Greece (200 B.C.).
Who is Archimedes of Syracuse?
300
This is a mathematician's favorite dessert.
What is Pi-napple Pi-e
300
This is the diameter of a circle with a circumference of 28.26 ft.
What is 9 ft.
300
Pi was named after this word in Greek.
What is perimeter
300
Given the circumference, this is the formula to find the diameter
What is circumference divided by pi
300
The English mathematician who introduced the symbol for pi in 1706.
Who is William Jones?
400
This is what a mathematician does with her papers
What is make a pi-le of papers
400
This is the area of a circle with a diameter of 4 inches.
What is 12.56 square inches?
400
The number of digits we now know of pi, thanks to modern computers.
What is 10 trillion?
400
Given the circumference, this is the formula to find the radius.
What is circumference divided by pi times two? Alternative Answer: What is circumference divided by 2pi?
400
The person who popularized the use of pi in 1737. (Hint: Not the same person who introduced the symbol)
Who is Leonhard Euler?
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 5 centimeters.
What is 78.5 square centimeters?
500
The structure that was built by the Ancient Egyptians using calculations based on pi.
What is the Great Pyramid of Giza?
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 "father of calculus" who calculated pi to at least 16 decimal places (15-16th century)
Who was Sir Isaac Newton?
M
e
n
u