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Look Out Below!

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Suppose a ladder 60 feet long is placed in a street so as to reach a window 37 feet above the ground on one side of the street, and without moving it at the foot, will reach a window 23 feet high on the other side of the street.  How wide is the street?

Columbian Calculator, 1846

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"Look Out Below!," Loci (July 2006)

Dummy View - NOT TO BE DELETED