the square base of a rectangular prism has a side length of 3 meters. each of the 4 lateral faces of the prism has a base length of 3 meters and a height of 9 meters. the prism has a total surface area of 126 square meters. a second rectangular prism has a square base that is 3 meters by 3 meters, but its total surface area is triple that of the first prism. what is the height, in meters, of each of the lateral rectangular faces of the second prism?

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