posted by Sarah on .
A cylindrical can holds three equal-sized balls perfectly. Which is larger, the can's height or the can's circumference?
Let the ball's radius be R.
The can's height is 6R.
The can's circumference is 2 pi R.
2 pi = 6.283.. > 6
Great question, one of my favourites.
I used to bring a tennis-ball can into class and challenge my students to give me a solution and explanation verbally.
Thanks drwls for the reminder.