## Sunday, December 23, 2012

### Pulley Puzzle

Labels:
Puzzles

A puzzle by Harry Langman:

A thin belt is stretched around three pulleys, each of which is 2 feet in diameter. The distances between the centers of the pulleys are 6 feet, 9 feet, and 13 feet. How long is the belt?

from Futility Closet.

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28 + 2pi ?

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