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Mathematics 13 Online
OpenStudy (anonymous):

Some nuclear power plants utilize "natural draft" cooling towers in the shape of a hyperboloid, a solid obtained by rotating a hyperbola about its conjugate axis. Suppose such a cooling tower has a base diameter of 400 feet, and the diameter at its narrowest point, 360 feet above the round, is 200 feet. If the diameter at the top of the tower is 300 feet, how tall is the tower?

OpenStudy (inowalst):

Any thoughts?

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