Find the oil pressure at the bottom of the tank if the height of the oil column is 10 m and its density is 800 kg / m³.

According to Pascal’s law:
The hydrostatic pressure inside the liquid at any depth does not depend on the shape of the vessel in which the liquid is located, and is equal to the product of the density of the liquid, the acceleration of gravity and the depth at which the pressure is determined:
P = ρ * g * h, where ρ is the density of the liquid, g is the free fall acceleration of a body raised above the Earth g = 9.8 m / s2, h is the depth of immersion in the liquid.

We substitute numerical values into our formula, we have:
P = ρ * g * h = 800 * 9.8 * 10 = 78400 Pa

Answer: the oil pressure at the bottom of the tank is 78400 Pa or 78.4 kPa.