Circumference Pi Day

The diameter of a circle is 3 centimeters. What is the circumference?

• 11.5cm2

• 9.42 cm2

• unicorns are awsome

• 45.3 cm2

Who did the first proof to find the number pi?

• Archimedes 

• Pythagorus

• Socrates

• Boyle

What is pi used to find?

• the perimeter of a square

• the area of a rectangle

• radius of a circle

• circumference of a circle

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

Pi is the ratio of a circle’s _________ to _________. 

• radius/diameter

• circumference/diameter

• area/circumference

• circumference/radius

What is pi used to find? 

• the perimeter of a square

• the area of a rectangle

• radius of a circle

• circumference of a circle

What is the "formal" definition of pi?

• 22/7

• 3.1415926

• the ratio of a circle's circumference to its diameter

• the surface area of a sphere of diameter 22/7

What does this symbol represent?

• a letter from the English alphabet

• a greek letter

• pie

• pi

Who did the first proof to find the number pi?

• Archimedes

• Pythagorus

• Socrates

• Boyle

Is pi irrational, rational, both, or neither?

• Both

• Irrational

• Rational

• Neither