Many sailboats are docked at a marina 4.4 km away on the
Chapter 1, Problem 34(choose chapter or problem)
Many sailboats are docked at a marina 4.4 km away on the opposite side of a lake. You stare at one of the sailboats because, when you are lying flat at the waters edge, you can just see its deck but none of the side of the sailboat. You then go to that sailboat on the other side of the lake and measure that the deck is 1.5 m above the level of the water. Using Fig. 116, where estimate the radius R of the Earth
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