Answer:
Ro = 815.5 [kg/m³]
Step-by-step explanation:
We must use the following equation to find the hydrostatic pressure exerted on the bottom of the cylinder.

where:
P = pressure = 2560 [Pa]
Ro = density [kg/m³]
g = gravity acceleration = 9.81 [m/s²]
h = elevation = 32 [cm] = 0.32 [m]
![2560=Ro*9.81*0.32\\Ro=815.5 [kg/m^(3) ]](https://img.qammunity.org/2021/formulas/physics/high-school/9f9vphho2o717f59axplxnehath0obqa27.png)