Pi Day Circle A

What does this symbol represent?

• a letter from the English alphabet

• a greek letter

• pie

• pi

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

How many digits are in pi?

• 10 trillion

• 5 billion 

• infinite 

• a lot 

Which of the following below must you always use Pi calculations for?

• to find the area and circumference of a circle

• to find the area of a rectangle

• to find the height of a square

• to find the length from one edge of a triangle to another

• to find the derivative of a function

What is the area of a circle with a radius of 6 inches?

• 113.04 square inches

• 226.08 square inches

• 56.52 square inches

• 452.16 square inches

What digits do we use for Pi?

• 31.4

• 3.14

• 314

A circular pool has a diameter of 16 meters. What is the area of the pool?

• 201.06 square meters

• 100.53 square meters

• 402.12 square meters

• 50.27 square meters

What is the formula to calculate the area 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