Ahemispherical tank is filled with water and has a diameter of 10 feet. if water weighs 62.4 pounds per cubic foot, what is the total weight of the water in a full tank, to the nearest pound?

The volume of a sphere is
volume = 4/3 * PI * radius^3
radius = 5 feet
volume = 4/3 * PI * 5^3
sphere volume = 523.6 cubic feet
hemisphere volume = 261.8 cubic feet
Weight of the water = 261.8 * 62.4 =  16,336 pounds

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