Question 80369
A spherical water tank is 12.6 ft. in diameter. What is the weight of the water in the tank if water weighs 62.4 lb/ft cubed? 
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Volume = (4/3)(pi)(6.3)^3
Volume = 1047.39 cu ft
Weight = (1047.39)*62.4 = 65357.41 lbs.
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Cheers,
Stan H.