From flooded basement, floor area of \u200b\u200b50 m2 which is needed to pump the water into the street. The depth of water in the basement of 1.5 m and the distance from the top of the water level to the bridge 5 meters. Find the lowest job that needs to be spent on pumping water.

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.