Answer:
Weight of gasoline = 2039.93 kN
Volume = 80783.80 gallon
Step-by-step explanation:
Volume = Base area x Depth

Depth = 22 ft
Volume = 490.88 x 22 = 10799.22 ft³ = 10799.22 x 0.0283168 = 305.8 m³
Density of gasoline = 680 kg/m³
Mass of gasoline = 305.8 x 680 = 207943.65 kg
Weight of gasoline = 207943.65 x 9.81 = 2039.93 kN
We have 1 m³ = 264.172 gallon
305.8 m³ = 305.8 x 264.172 = 80783.80 gallon