The Pi Trivia Game
part of Pi Land

Finally this is your chance to pay tribute to the magnificent transcendental number that we have all grown to love! Test your knowledge of history, mathematics, and even a little physics.

Here are 25 (given to you 5 at a time) fun pi-related questions, picked randomly from my exciting pi question database! Get ready for the thrill of your lifetime, the ultimate challenge, The Pi Trivia Game!

Pi Flower
1. If one were to find the circumference of a circle the size of the known universe, requiring that the circumference be accurate to within the radius of one proton, how many decimal places of pi would need to be used?
2 million
39
11
48,000
300

2. What is the volume of a sphere (3-dimensional, not a hypersphere) [r = radius]?
6(pi*r)^3
(4/3)(pi)(r^3)
([2/3]*pi*r)^3
2*pi*r
4*pi*(r^2)

3. What is the formal definition of pi?
the ratio of a circle's circumference to its diameter
3.14159
the radius of a unit circle
the surface area of a sphere of diameter 22/7
a delicious dessert, especially if it contains cherries

4. How does one convert pi in base 10 to base 2?
Keep only the '0' and the '1' in the decimal expansion.
It is impossible because pi > 2.
Replace each digit of pi in base 10 with a 0 if it is divisible by 2 and with and 1 if it is not.
Successively multiply pi by 2 and put a '1' when it is greater than 1 and a '0' when it is smaller than 1. Repeat this step after having kept only the fractional part of the result.
Divide pi in base 10 by 5.

5. A famous book contains the following paragraph, implying that pi=3:

And he made a molten sea, ten cubits from the one brim to the other: it was round all about, and his height was five cubits: and a line of thirty cubits did compass it about.

What book does this come from?

Homer's Odyssey
Ulysses by James Joyce
The Bible
A Brief History of Time by Stephen Hawking
Douglas Adams' Hitch Hiker's Guide to the Galaxy

eve@eveandersson.com