What do we know about the world we live in?

1 / 10

3.14

π without zza may not exist!

Half diameter

4.13

Internet says that π was called "pi" because pi is the first letter in the Greek word perimitros, which means "perimeter."

They have forgotten the real reason! π is called "pi" because pi is the beginning of pizza and pizza is round! Hello???!!!

Dalej