A rectangular box with a volume of 64 ft is to be constructed with a square base and top. The cost per square foot for the bottom is 20e, for the top is 10¢, and for the sides is 1.5¢. What dimensions will minimize the cost? What are the dimensions of the box? The length of one side of the base is The height of the box is (Round to one decimal place as needed.)

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Q: b. N(0)

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