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Water fills a spherical tank of diameter 16 meters until the water is 4 meters deep at the lowest point in the tank. What is the diameter of the surface of the water?

 Feb 29, 2020
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Since all cross-sections of a sphere are circles we can use the fact that  r2 = 4*(16 - 4)  where r is the radius of the circular water surface.

 

So r = sqrt(48) = 4sqrt(3) m. Hence diameter = 8sqrt(3) m

 Feb 29, 2020

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