The capacity of the fuel tank = 14.8 gallons.
Note that
1 US gallon = 0.13368 ft³.
Therefore the capacity is
(14.8 gals)*(0.13368 ft³/gal) = 1.9785 ft³.
The density of gasoline is 42.0 lb/ft³, therefore the mass of gasoline is
(42 lb/ft³)*(1.9785 ft³) = 83.097 lb.
Because 1 lb = 0.4536 kg, the mass is
(83.097 lb)*(0.4536 kg/lb) = 37.693 kg
Answer: 37.7 kg (nearest tenth)
