Celebrating Pi Day Activities and Facts

Pi Day is celebrated on March 14th, first observed in 1988 by Larry Shaw at the San Francisco Exploratorium. In 2009, the US House of Representatives recognized it officially. Pi is an infinite number, with the first three digits being 3.14, making March 14th an ideal date for celebration. Pi represents the ratio of a circle's circumference to its diameter. Celebrations vary but often include pie-related activities due to the pun on 'pi' and 'pie'. People engage in pie-eating or throwing contests and memorization challenges. For more information, visit twinkle.com.

When is Pi Day celebrated each year?

• March 14th

• April 14th

• May 14th

• June 14th

Who is credited with the first celebration of Pi Day?

• Galileo Galilei

• Isaac Newton

• Albert Einstein

• Larry Shaw

In which year did the United States House of Representatives recognize Pi Day?

• 2005

• 2009

• 2012

• 2015

What is the mathematical significance of Pi?

• It is the sum of a circle's radius and diameter

• It is a finite number

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

• It is the area of a circle

What are the first three digits of Pi?

• 3.15

• 3.12

• 3.14

• 3.13

What is the nature of Pi as a number?

• It is a finite number

• It is a whole number

• It is an infinite number

• It is a negative number

How is Pi calculated?

• By multiplying the radius by two

• By adding the radius and diameter

• By dividing the circumference by the diameter

• By dividing the diameter by the circumference

What is the relationship between Pi and a circle?

• Pi is the radius of a circle

• Pi is the area of a circle

• Pi is the ratio of circumference to diameter

• Pi is the diameter of a circle

What is a common activity on Pi Day due to the pun with 'pie'?

• Making sandwiches

• Throwing pies

• Eating circular cakes

• Baking cookies

Why are pies often involved in Pi Day celebrations?

• Because they are cheap

• Because they are sweet

• Because they are circular

• Because they are easy to make