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Homework Help: Largest possible radius homework problem

  1. Jun 15, 2010 #1
    1. The problem statement, all variables and given/known data

    A 100 mm cube has a thin and rigid wire inserted 20 mm from each of two adjacent edges ,as shown.The cube contains a sphere that is not cut by the wire .What is the largest possible radius ,to the nearest mm, of the sphere that just touches the wire?

    2. Relevant equations



    3. The attempt at a solution

    Some hints ?
     

    Attached Files:

  2. jcsd
  3. Jun 15, 2010 #2

    LCKurtz

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    Re: Geometry

    Here's a top view, drawn to scale. That's my hint:

    forumsphereincube.jpg
     
  4. Jun 16, 2010 #3
    Re: Geometry

    that's a great hint, thanks! I got r=47mm by phythagoras.
     
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