Question: A closed construction box (rectangular) is being made, with a square base from 2 different woods. The wood for the top and the bottom costs

A closed construction box (rectangular) is being made, with a square base from 2 different woods. The wood for the top and the bottom costs $20/m^2. The wood for the sides costs $30/m^2. Find the dimensions of this construction box that will minimize the cost if the box is to have a capacity of 4L. Also state the minimum cost. (Confirm that the cost is the minimum). Round to 2 decimal places if necessary.

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