Please help me to fix this sentence to sentence with more delivery and fluency Which amount of water is more between the amount of water that evaporates in a day or the amount of water that comes down as rain in a day?

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.