The flat-bottomed baja received a hole in the bottom and half a dozen 10 cm.

The flat-bottomed baja received a hole in the bottom and half a dozen 10 cm. With what force do you need to put on the plaster that closes the hole in order to reduce the set of water at a depth of 1.80m.

Liquid pressure p is determined by the formula:
p = ρ * g * h, where ρ is density, g is gravitational acceleration, h is depth.
By definition, pressure is equal to:
p = F / S where F is force, S is area.
Let’s equate these equations:
F / s = ρ * g * h
F = ρ * g * h / S
Let us take ρ = 1000 kg / m ^ 3 (that is, the barge sinks in fresh water) then:
F = 1000 * 9.8 * 1.8 / 10 ^ -2 = 17.6 * 10 ^ 5Pa = 1.76 * 10 ^ 6Pa = 1.76 MPa.