Pi Day

What does this symbol represent?

• a letter from the English alphabet
• a greek letter
• pie
• pi

What does "circumference" mean?

• Space a circle takes up
• Distance around a circle
• Line from one side of a circle to another
• Line from center of circle to side

A circle has a diameter of 36 ft. What is the radius?

• 18

• 72

• 14

Determine the radius of the penny

• 59.66 mm
• 9.5 mm
• 38 mm
• 119.32 mm

What number is pi?

• 1.41

• 2.00

• 3.14

• 5.14

What is/are the formula(s) to find the area of a circle?

• πr²
• 2πr
• √π

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

What is the blue colored part of this circle called?

• Circumference

• Diameter

• Radius

• Area

Are pi's digits periodic? In other words, do the digits ever repeat themselves in any pattern?

• No, pi is irrational
• Yes, every 6,000,000 decimal places
• Yes, every infinitely long number repeats
• Maybe, not enough digits of pi are known yet

What is the radius of this circle?

• 18
• 10
• 9
• 8