Radian Pizza
A pizzeria charges $3 per radian, so a whole pizza (2π radians) costs an irrational $18.85.
Use this cartoon
Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-03-31-radian-pizza/ (CC BY-NC 4.0)Transcript
[Sign] "Pizza By the Radian! $3 per radian."
Customer: "How much for a whole pizza?"
Cashier: "$18 and change. Very weird change."