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26-05-2019
Mathematics

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1. A water storage tank is in the shape of a hemisphere (half a sphere). If the radius is 20ft the approximate the volume of the tank in cubic feet

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26-05-2019

Volume of the tank=16,755 cubic feet

The volume of a sphere is:

4/3 π r^3.

So the volume of a hemisphere is half of that:V = (2 / 3) π r^3.

r=20

V=(2/3)π(20)^3

V=(2/3)π8000

V=16,755 cubic feet

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