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Problems from Another Time

Individual problems from throughout mathematics history, as well as articles that include problem sets for students.

A bridge is built across a river in 6 months by 45 men. It is washed away by the current. Required the number of workmen sufficient to build another of twice as much worth in 4 months.
How a translation of Peano's counterexample to the 'theorem' that a zero Wronskian implies linear dependence can help your differential equations students
The triangle ABC has a right angle at C. Show that 1/ED=1/AC+1/AB
There is a log 18 feet long, the diameter of the extremities being 1 ft and 2.6 ft respectively...
A man went to a draper and bought a length of cloth 35 braccia long to make a suit of clothes.
Discussion of 15th century French manuscript, with translation of its problems, including one with negative solutions
Two circles, the sum of whose radii is a, are placed in the same plane with their centers at a distance 2a...
A fish sees a heron looking at him from across a pool, so he quickly swims towards the south. When he reaches the south side of the pool, he has the unwelcome surprise of meeting the heron.
Three congruent circles of radius 6 inches are mutually tangent to one another. Compute the area enclosed between them.
Determine the radii of three equal circles decribed within and tangent to a given circle, and also tangent to each other

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