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Weekly Problem 51 - 2015

Stage: 4 Challenge Level: Challenge Level:3 Challenge Level:3 Challenge Level:3

Charlie is making clown hats from a circular piece of cardboard.

The circumference of the base of each hat equals its slant height, which in turn is equal to the radius of the piece of cardboard. What is the maximum number of hats that Charlie can make from the piece of cardboard?

This problem is taken from the UKMT Mathematical Challenges.

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