To what level should gasoline be poured into the canister so that it exerts pressure on the bottom of the canister 2840Pa

P = 2840 Pa.
ρ = 750 kg / m ^ 3.
g = 9.8 m / s ^ 2.
h -?
The hydrostatic pressure of the liquid at the bottom is determined by the formula: P = ρ * g * h. Where ρ is the density of the liquid, g is the acceleration of gravity, h is the height of the liquid.
h = P / ρ * g.
h = 2840 Pa / 750 kg / m ^ 3 * 9.8 m / s ^ 2 = 0.386 m.
Answer: the height of the gasoline in the canister should be h = 0.386 m.