Circumference Pi Ratio

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Tags

7.5.B

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

Is pi irrational, rational, both, or neither?

• Both

• Irrational

• Rational

• Neither

What does this symbol represent?

• a letter from the English alphabet

• a greek letter

• pie

• pi

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

Another use for pi?

• circumference of a circle

• desert after dinner

• triangle bisect line

• square root

The equation C = πd, is used to find the circumference of a circle given it's diameter. This formula can be rearranged to solve for pi. Which equation is written correctly to solve for pi?

• π = Cd

• π = C ÷ d

• π = d ÷ c

• π = C - d

What is the formula to find the circumference of a circle?

• Pi times radius squared

• Two times Pi times diameter

• Two times Pi times radius

• Pi times diameter

What number is pi?

• 41

• 00

• 3.14

• 5.14