Question: 5. Design the steel framework shown below at minimum cost. The cost of each horizontal member in one direction is $20w and in the

5. Design the steel framework shown below at minimum cost. The cost of each horizontal member in one direction is $20w and in the other direction it's $30d. The cost of a vertical column is $50h. The length units are in meters. The frame must enclose a total volume of 600m.

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