<PRE><B>Question 549758</B>
What is the volume in gallons and barrels of a tank that is 8&#39;w,8&#39;T,30&#39;L 
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Vol = L*W*H = 8*8*30 = 1920 cubic feet
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1 cu ft =~ 7.48 US gallons
Vol = 1920*7.48 = 14362 gallons
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There are different size barrels used.  The petroleum industry uses 42 gallon barrels, a wine barrel is 33 gallons, and there are 55 gallon drums.
Divide 14362 by the one you mean.

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