Pi Riddles
This is the circumference of a circle with a diameter of ten inches.
Round to the nearest tenth.
What is 31.4 inches
Pi is the ratio of a circle's circumference to this measurement.
What is the diameter
This is the formula to find the circumference of a circle
What is C = pi x d. or C = 2 x pi x r
This is the cutest pi there is
What is a "Cutie Pi-e"
This is the circumference of a circle with a radius of four centimeters. Use 3.14 for pi.
Round to the nearest tenth.
What is 25.1 centimeters
This is a number that CANNOT be expressed as a fraction of two integers
What is an irrational number
This is the formula for finding the area of a circle
What is A = pi x r2
This is what you get when you divide a Jack-o-Lantern by its diameter.
What is Pumpkin Pi-e
This is the diameter of a circle with a circumference of 28.26 ft. Use 3.14 for pi.
What is 9 ft.
Pi got its name from the Greek word for this
What is perimeter
This is the formula to find the volume of a cylinder
What is V = pi x r2 x h
This is what you get when you take green cheese and divide it by its diameter
What is Moon Pi-e
This is the area of a circle with a diameter of four inches. Round to the nearest tenth.
What is 12.6 in2
He is credited with determining a remarkably accurate approximation of pi in earliest times
Who is Archimedes of Syracuse
This is the formula to find the volume of a cone
What is V = 1/3 x pi x r2 x h
This is what you get when you take the sun and divide it by its diameter
What is Pi-e in the Sky
This is the area of a circle with a radius of five centimeters. Round to the nearest tenth.
What is 78.5 cm2
This is the connection between Albert Einstein and Pi Day
What is a birthday on March 14
This is the formula to find the volume of a sphere
What is V = 4/3 x pi x r3
This is a mathematician's favorite animal
What is a pi-thon