Answer : The volume required to fill the gas tank is, 45.42 liters
Explanation :
Conversion used for gallon to liters are:

As we are given the volume of gas tank in gallon is, 12.0 gal
Now we have to determine the volume of gas tank in liters.
As, 1 gallon = 3.785 liter
So, 12.0 gallon =

Therefore, the volume required to fill the gas tank is, 45.42 liters