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Can you help me in this problem?

  1. Apr 30, 2008 #1
    Find the dimensions of the isosceles triangle of least area that circumscribes a
    circle of radius r.

    I think you will benefit from this equation: A= 1/2 L^2 sinθ

    and how to find L in terms of r to be has one variable??
  2. jcsd
  3. May 2, 2008 #2
    L/2 = r * cos(θ/2)
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