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A man is walking across a bridge, when a boat passes under the bridge.How rapidly are the boat and the pedestrian separating after the boat passes under the bridge?

A pond has two water reeds, where the one grows 3 feet and the other 1 foot on the first day. The growth of the first becomes every day half of that of the preceding day, while the other grows twice as much as on the day before.

A certain bishop ordered that 12 loaves be divided among his clergy.

How high above the earth must a person be raised that he [or she] may see 1/3 of its surface?

An image of the calendar, together with instructions for its use

Prove that the area of a regular polygon can be given by the product of its perimeter and half the radius of the inscribed circle.

This is the title page of Isaac Barrow's Latin edition of the works of Archimedes, the first four books of Apollonius's Conics, and Theodosius's Spherica. It was published in 1675.

Four men already having denari found a purse of denari; each man has a different amount of denari before they found the purse. Find out how much denari each man has.

A thorough study of Benjamin Franklin's mathematical accomplishments, in particular his work on magic squares.

A round pond sits in a rectangular garden. Its center is inaccessible; however, you know the distances from each corner of the garden to the circumference of the pond: 60, 52, 28, and 40 yards. What is the radius of the pond?

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