If the diameter of a circle is 1, what is the circumference? Drawing on board.
Circumference: 3.1
Does Pi end?
No
What numbers does 𝛑 stand for?
3.14
If diameter was 3 what would circumference be?
9.4
Since when was Pi used?
The 1700's
What is one thing you can build using Pi?
If radius was 2 what would circumference be?
Circumference = 12.6
Where was Pi day first celebrated
San Francisco!
What can pi be used to measure (besides circumference)?
Ocean waves and the speed of something spinning.
If diameter was 5.5 what would circumference be?
Circumference = 17.3
Who popularized Pi?
Leonhard Euler
Pi was used in _______ procedures
Medical Procedures
Circumference = 45.8
BONUS FOR EXTRA POINTS
What are the first six digits of pi?
3.14159
What was the equation for circumference using pi?
C=diameter*3.14