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January 11, 2015

Chain and Nail Puzzle

There is a chain nailed to the wall. The chain is 10 feet long and the center of the chain dips down 5 feet from where each side of the chain is nailed to the wall. How far are the 2 ends of chain from each other?

3 comments:

Richard said...

Trig: a + b = c

Eric Langevin said...

They are touching.

JyRKS said...

The chain is 10 feet long and dips down 5 feet, which means that on both sides the chain must go directly down, meaning that indeed that walls are against each other.