1.

A hemispherical tank is filled with water and has a diameter of 13 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?

Answer»

Answer:

We KNOW that the volume of a sphere is:

V=43πr3

where r=102=5ft is the RADIUS:

we need half of this, so we use:

V2=23πr3=261.8ft3

giving a total weight of WATER of

W=261.8⋅62.4=16,336 POUNDS



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