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Polar coordinates

  1. Sep 26, 2006 #1

    413

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    http://i10.tinypic.com/3ztgdx2.jpg

    Consider a pasture bordering on a straight river. At 2m from the river, a goat is tied to a pole with a 4m long rope. What is the area of grass that the goat can graze?

    The answer i got is about 40.4383m^2

    Am i correct?
     
  2. jcsd
  3. Sep 27, 2006 #2

    J77

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    Yep - your answer is correct.

    You used [tex]2\int^4_{-2}\sqrt{16-x^2}dx[/tex]

    (or polar equivalent),

    right?
     
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