co Week 11 Homework - Edfinity X + edfinity.com/assessments/6440517dd2e38e003aa69efb : Press (fn) F to exit full screen M Gmail YouTube Maps A Detalles de la vist... New Tab edfinity Week 11 Homework OPEN I am finished Math 226-05 You have answered 0 out of 4 parts correctly. Home An aluminum can is to be constructed to contain 2100 cm of liquid. Help Center Let r and h be the radius of the base and the height of the can respectively. a) Express h in terms of r. (If needed you can enter 7 as pi.) 1 2 3 4 5 h = 1200/(Ttr2) b) Express the surface area of the can in terms of r. Surface area = 1200/(Ttr2) c) Approximate the value of r that will minimize the amount of required material (i.e. the value of r that will minimize the surface area) What is the corresponding value of h? 20 h = 8.4 Score: 50% (10/20) Answers Attempt 8 of 8 Completion: 100% (5/5) Answer Scoreco Week 11 Homework - Edfinity X + edfinity.com/assessments/6440517dd2e38e003aa69efb : M Gmail YouTube Maps A Detalles de la vist... New Tab edfinity Week 11 Homework OPEN I am finished Math 226-05 4 . Try again Practice similar Help me with this Previous Next > Home Help Center You have answered 1 out of 2 parts correctly. 1 2 A 5 A landscape architect wished to enclose a rectangular garden on one side by a brick wall costing $60/ft and on the other three sides by a metal fence costing $50/ft. If the area of the garden is 168 square feet, find the dimensions of the garden that minimize the cost. Length of side with bricks x = 8.4 Length of adjacent side y = 13.85 Answers Attempt 13 of 13 Answer Score x 8.4 0/ 2 ... 13.85 2/2 Score: 50% (10/20) Completion: 100% (5/5) 2/ 4 submitted late00 Week 11 Homework - Edfinity X + v ( 9 C i edfinity.com/assessments/6440517dd2e38e003aa69efb ] '2: El I] a M Gmail D VouTube 9 Maps A Detallesdelavist... e NewTab nlty Week11 Homework man 5. e mi '5 Home ? Help Center You have answered 0 out of 7 parts correctly. 0 . 9.. A printed poster is to have a total area of 772 square inches with top and bottom margins of 6 inches and side margins of 4 inches. What should be the dimensions of the poster so that the printed area be as large as possible? To solve this problem let x denote the Width of the poster in inches and let y denote the length in inches. We need to maximize the following function of z and y: We can reexpress this as the following function of :1: alone: We nd that f(z) has a critical number at at = To verify that f(w) has a maximum at this critical number we compute the second derivative f"(z) and find that its value at the critical number is , a negative number. Thus the optimal dimensions of the poster are _ inches in width and _ inches in height giving us a maximumal printed area of _ square inches. {27 Score: 50% (10/20) Completion: 100% (5/5)