A company manufactures cylindrical tin cans with closed tops with a volume of 400 cubic centimeters. The metal used to manufacture the cans costs $0.01 per square centimeter for the sides and $0.02 per square centimeter for the (thicker) top and bottom. What should be the dimensions of the cans to minimize the cost of metal in their production? HINT [See Example 4.] (Round your answers to two decimal places.) radius cm height cm What is the ratio height/radius? (Round your answer to two decimal places.)

(a) To the nearest acre, how big is the field? Round intermediate steps to two decimal places. (b) Using the number of acres from part (a), estimate the cost to fertilize the field. Round intermediate steps to two decimal places and round your final answer to the nearest dollar.

A- A meter trundle wheel is a convenient device for measuring distances along the ground. Every time the wheel makes one complete revolution, it has moved forward 1 meter. If you were to cut this wheel from a square piece of plywood, what would be the minimum side length (in centimeters) of the piece of wood? (Round your answer to two decimal places.) B- Building codes generally require that the ventilating area be not less than 1/150 of the area of the floor of the attic space being ventilated. If the attic of a house is 80 feet by 35 feet, what is the minimum number of square inches of ventilation needed?

Any help with this question would be appreciated I just need help with the red marked areas, thanks!

A box is constructed with the length six times the width and the height eight less than five times the width (see figure below). h=5x-8  w=x l=6x What are the dimensions of the box that creates a volume of 70 ft3? (round to one decimal place. Use the rounded values to compute your dimensions) length=length=  ft width=width=  ft height=height=  ft

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