Thursday
October 30, 2014

Homework Help: calculus

Posted by Anonymous on Friday, April 10, 2009 at 4:59pm.

A lifeguard was staring at a ship in the distance, and watched the smokestack as the ship went out to sea. The lifeguard's eye level is 4 meters above sea level. If the height of the smoke stack above water is 30 meters and the radius of earth is about 6400km, how far off from the shore would the ship be when the lifeguard who loose sight of it.

how should I start this?

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