Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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The correct answer is C, but I don't understand how to do the work for this problem. Can you help me solve it? 

Say a farmer out in Corpus Christi wants to build two rectangular pens in this formation:
If the length of the entire region is l and width of it is w, then the amount of fence it takes to build these pens is 26+3w.
Say that the farmer has 100 feet of fencing. What are the dimensions of length and width that maximize the combined area
of the two pens? (Round your answers to four decimal places if necessary.)
(a) l= 20, w = 20
%3D
(b) l = 25, w = 25
%3D
(c) l= 25, w = 16.6667
%3D
(d) l=5, w = 30
(e) None of the above
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Transcribed Image Text:Say a farmer out in Corpus Christi wants to build two rectangular pens in this formation: If the length of the entire region is l and width of it is w, then the amount of fence it takes to build these pens is 26+3w. Say that the farmer has 100 feet of fencing. What are the dimensions of length and width that maximize the combined area of the two pens? (Round your answers to four decimal places if necessary.) (a) l= 20, w = 20 %3D (b) l = 25, w = 25 %3D (c) l= 25, w = 16.6667 %3D (d) l=5, w = 30 (e) None of the above
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