Find the minimum cost of a rectangular box of volume 190 cm whose top and bottom...

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Find the minimum cost of a rectangular box of volume 190 cm whose top and bottom cost 4 cents per cm and whose sides cost 2 cents per cm. Suppose that f(x, y) = 5 x y at which {(x, y) | x + y 5}. - tr=5 Then the double integral of f(x, y) over Dis [[ f(x, y)dady D Find the minimum cost of a rectangular box of volume 190 cm whose top and bottom cost 4 cents per cm and whose sides cost 2 cents per cm. Suppose that f(x, y) = 5 x y at which {(x, y) | x + y 5}. - tr=5 Then the double integral of f(x, y) over Dis [[ f(x, y)dady D