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A barrel has various holes in it. The first hole empties the barrel in three days...

A circle is inscribed in an isosceles trapezoid. Find the relationship of the radius to the sides.

In this fascinating and accessible book, the author devotes one lively, informative page of description and one striking, full-page illustration to each of 250 milestones in mathematics.

Water in a Fish Pond

There is a round fish pond of certain dimensions, and into the pond is dropped a marble column. How high will the water rise?

Feline Geometry

Given the cats eye as shown. Let the radius of the eye be given by R. What is the area of the pupil?

The Ant Race

Two ants are 100 paces apart, crawling back and forth along the same path. The first goes 1/3 pace forward a day and returns 1/4 pace; the other goes forward 1/5 pace and returns 1/6 pace. How many days before the first ant overtakes the second?

Mystery Numbers

Find two numbers such that multiplying one by the other makes 8 and the sum of their squares is 27.

The Door is Ajar

A two door gate of unknown width is opened so that a 2 ts'un gap exists between the two doors.

Horses to Qi

Now a good horse and an inferior horse set out from Chang'an to Qi. Qi is 3000 li from Chang'an.

Review of The Genesis of Science: The Story of Greek Imagination

Review of Bertram's text on the history of Greek science.