Pi Basics
This Greek letter represents Pi.
What is π ?
This Greek mathematician used polygons to approximate Pi.
Who is Archimedes?
Pi is used to find the volume of this 3D shape with all points the same distance from the center.
What is a Sphere?
Pi appears when calculating the area of this shape used in lenses and telescopes.
What is a Circle?
Pi appears in this formula for the area of a circle.
What is A = πr²
Pi Day is celebrated on this date.
What is March 14?
This ancient civilization approximated Pi as 3.125.
What are the Babylonians?
Pi appears in the formula for the volume of this shape with circular bases.
What is a Cylinder?
This space agency uses Pi to calculate spacecraft paths.
What is NASA?
Pi is this type of number because it cannot be written as a fraction.
What is an Irrational number?
Pi helps calculate the length of this curved part of a circle.
What is an Arc?
Pi appears in this branch of math dealing with shapes.
What is Geometry?
This mathematician introduced the symbol π in 1706.
Who is William Jones?
Pi helps calculate the area of this shape that looks like a slice of pizza.
What is a Sector?
How many decimal places of Pi does NASA need for interplanetary exploration?
What are the First 15 Decimal Places?
Pi is used when calculating the angle measure in this triangle type.
What is a Right Angle Triangle?