Answer : The pressure of the liquid at depth of 48 ft below the surface of fluid is, 21 psi.
Explanation : Given,
The pressure of the liquid at depth 8 ft = 3.5 psi
Now we have to calculate the pressure of the liquid at depth 28 ft.
According to the question,
As, the depth of 8 ft below the surface of a stagnant fluid has pressure = 3.5 psi
So, the depth of 48 ft below the surface of a stagnant fluid has pressure =
Therefore, the pressure of the liquid at depth of 48 ft below the surface of fluid is, 21 psi.