Pi Riddles
Numbers
Formulas
History of Pi
Do the Math
100
This is what you call a mathematician that takes over a ship.
What is a pi-rate
100
How long is pi?
Infinite
100
How do you find the area of a circle.
a = πr^2
100
What famous physicist was born on pi day?
Albert Einstein
100
What is the circumference of a circle with a diameter of 10 cm?
31.4 cm.
200
This is what a mathematician needs to fly his plane.
What is a Pi-lot's License
200
Pi is to refer to as what a month and what day?
March 14
200
What formula do you use to find the surface area of a circle?
4πr^2
200
Who discovered the fraction (22/7) of pi?
Archimedes
200
What is the diameter of a circle with the radius of 10 cm?
20 cm.
300
This is a mathematician's favorite dessert.
What is Pi-napple Pi-e
300
How is pi defined?
Irrational
300
How do you find the circumference of a circle?
c = 2πr
300
How old is pi?
Around 4000 years old.
300
What is the area of a circle with the radius of 2 in?
12.56 in.
400
This is what a mathematician does with her papers
What is a pi-le
400
What is pi as a fraction?
22/7
400
What is this formula called?
Euler's Identity
400
Who is Zu Chongzhi?
Chinese mathematician and astrologer.
400
What is the area of a circle with the diameter of 40 ft?
1256 ft.
500
This is what the mathematician put into her gourmet cookies.
What is s -pi-ces
500
What are the first 5 digits of pi? (after the decimal point)
3.14159
500
What formula do you use to find the volume of a sphere?
4/3 πr^2
500
Who was the first person to ever use pi?
Archimedes of Syracuse
500
Solve: e^iπ + 1 = x
x = 0