A rectangular storage container with an open top is to have a
volume of 30 cubic meters. The length of its base is twice the
width. Material for the base costs 14 dollars per square meter.
Material for the sides costs 5 dollars per square meter. Find the
cost of materials for the cheapest such container.
Total cost = (Round to the nearest penny and include
monetary units. For example, if your answer is 1.095, enter $1.10
including the dollar sign and second decimal place.)
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