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Unformatted text preview: There will be no additional time allowed for corrections to students who are absent from class, regardless of the reason. If you are absent for so long that you fail to get the extra points opportunity problems by the due date, then you will have to take the late penalty. The privilege of full credit eligibility is reserved for students who attend class regularly. A steel drum in the shape of a right circular cylinder is required to have a volume of 81 cubic feet. (a) Express the amount A of material required to make the circular wall of the drum as a function of the radius r of the cylinder. (3 points) (b) How much material is required for the circular wall of the drum if the radius is as follows? (3 points) (i) 2 feet? (ii) 3 feet? (iii) 4 feet? (c) Use a graphing utility to draw the graph of the function A = A ( r ). Draw the graph below or on the back. For what value of r is A the smallest? (2 points) Page 1 of 1...
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