Ratio of Pi

• A

• B

• C

• D

Which of these ratios is the closest approximation of pi?

Which of these ratios is the closest approximation of pi?

• 13/4

• 16/5

• 19/6

• 22/7

Another use for pi?

• circumference of a circle

• desert after dinner

• triangle bisect line

• square root

What do you get when you divide the circumference of a Jack-o-Lantern by its diameter?

• Pumpkin

• Jack-o-Lantern

• Pumpkin Pi

• Pi in the Sky

π is a ratio.

It compares a circle's circumference

to its _________________.

• radius

• diameter

• area

• itself

π is a ratio.

It compares a circle's ____________

to its diameter.

• radius

• diameter

• circumference

• itself

The symbol for Pi is

• π

• Σ

• Ψ

• ⊈

Pi is the ratio of a circle's ______ and ______.

• diameter and circumference

• circumference and radius

• Radius and diameter

• circumference and diameter

What ancient Greek mathematician found the ratio between a circle's circumference and diameter?

• Archimedes

• Pythagoras

• Hypatia

• Euler