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Pi Riddles
Do the Math
Pi Facts
Pi Formulas
Digits 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 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

This is the formula to find the circumference of a circle

What is 2 times pi times r or pi times diameter

100

What is the value of pi ? (2 digits after decimal)

What is a "3.14"

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 four 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 pi times the radius squared

200

What is the value of pi ? (3 digits after decimal)

What is "3.141"

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 got its name from the Greek word for this

What is perimeter

300

If the circumference of a circle is 10pi, what is the radius?

What is 5?

300

What is the value of pi ? (4 digits after decimal)

What is "3.1415"?

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
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

If the area of a circle is 121pi, what is the radius of the circle?

What is 11?

400

What is the value of pi ? (5 digits after decimal)

What is "3.14159"

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
What is 78.5 square centimeters
500

This the connection between Albert Einstein and Pi Day

What is a birthday on March 14

500

True or False: π eventually repeats its digits in a predictable pattern.

What is false?

500

What is the value of pi ? (6 digits after decimal)

What is "3.141592"