Saturday, September 13, 2008

A drink too many

A cone-shaped paper drinking cup is to be made to hold 27 cu cm of water. Find the height and radius of the cup that will use the smallest amount of water. [4]

This is one of the problems which, by taking the usual road, can make the solution more complicated than the problem.

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Source:

[4]
Problem 36, page 338.

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