SOLUTION: I am trying to figure out how many gallons a tank will hold if it measures 27 inches wide by 9 inches deep by 84 inches long. So it has 20,412 square inches, I think. Or 756 cubic

Question 284205: I am trying to figure out how many gallons a tank will hold if it measures 27 inches wide by 9 inches deep by 84 inches long.
So it has 20,412 square inches, I think. Or 756 cubic inches.
I just can't figure it out.
How do I know how many gallons to a square inch? or cubic inch?
Found 2 solutions by stanbon, richwmiller:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
1 gallon = 231 cu. inches.
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You can find things like this using Google on the web.
Just search for gallons cubic inches.
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Cheers,
Stan H.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
1 Cubic Inch = 0.00432900433 Gallons
27*9 would be square inches two dimensions
27*9*84 = cubic inches three dimensions
Don't know why you divided by 9
so multiply 20,412 *.00432900433= abt 88.36 gallons

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