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Homework Help: Minimization of Material

  1. Jan 11, 2006 #1
    To contain oil spills, rectangular booms that have a cross-link to provide stability are used. The cross-link joins the long sides and is parallel to the short sides. What is the minimum total length of boom required to enclose an oil spill covering 100 000 m^2 of water if it can only be constructed from 10-m sections?

    I figured out how to do this if 10-m sections are not required, but cannot figure out what to do if the booms have restrictions. Please advise. Thanks!
     
  2. jcsd
  3. Jan 11, 2006 #2

    HallsofIvy

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    What length and width do you get if 10-m sections are not required? What are the closest multiples of 10 larger than that?
     
  4. Jan 11, 2006 #3
    250 m and 400 m. But I just got that from common sense. Is there a "calculus way" to do it?
     
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