Pi Discovery and Circle Parts

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

Which of the following are the earliest known reference(s) to pi?    

• The Rosetta Stone and Bible

• A Middle Kingdom papyrus scroll,   by Ahmes the scribe

• Babylonian and Egyptian texts 

• Homer’s Illiad 

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 ratio of a circles diameter to its area

Tags

CCSS.7.G.B.4

Who did the first proof to find the number pi?

• Archimedes 

• Pythagorus

• Socrates

• Boyle

Tags

CCSS.HSG.GMD.A.1

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Does this picture show the diameter or radius of a circle?

• Diameter

• Radius

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

Tags

CCSS.7.G.B.4

What is the formula for finding the circumference of a circle?

• C = r²

• C = rd

• A = π·r²

• C = π·d

Tags

CCSS.7.G.B.4

What is the formula for finding the area of a circle?

• A = π·d

• C = 2·π·r

• A = π·r²

• C = π·d

Tags

CCSS.7.G.B.4

Find the area of the circle.

• 18.84 m²

• 113.04 m²

• 37.68 m²

• 452.16 m²

Tags

CCSS.7.G.B.4