Final answer:
The pressure exerted on the bottom of the gas tank is 110 Pa.
Step-by-step explanation:
To find the pressure exerted on the bottom of the gas tank, we need to determine the weight of the gasoline in it and divide that by the area of the bottom of the tank.
The weight of the gasoline is 50.0 kg. The area of the bottom of the tank is calculated by multiplying its width by its length: 0.500 m x 0.900 m = 0.450 m².
So, the pressure exerted on the bottom of the tank is the weight of the gasoline divided by the area of the bottom: 50.0 kg / 0.450 m² = 111.11 Pa.
Therefore, the correct answer is 110 Pa.