No, you don't have to do it. I have four glofish in a 2-and-a-half galon, but I advise you not to do it. Six inches of fish in a three gallon is too much. I advise you to either not get a fish or to get another tank, unless you want one of your fish to die.
because it is it is made like that, because you have to deal with it
No because a gallon is a unit of volume, to mater what you are measuring the volume used remains the same.
In flight planning we assume 6 pounds per gallon for fuel
The gallon challenge is when somebody dares another person to drink a gallon of milk under a hour.
$1170.
Because that is what they decided when they regulated the gallon.
The Suzuki GSXR gets about 40 miles per gallon depending on how you are driving it. Some studies show it getting 38 miles per gallon and some show it getting 43 miles per gallon.
If it's getting 60mpg then 60 miles for one gallon. The speed is irrelevant.
gallon
Gallon, because 16 cups go into a gallon
It will cost $526 in fuel costs.
$168