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Math Help - help this geometry problem

  1. #1
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    help this geometry problem

    please find the attached problem. Need help to solve it.
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  2. #2
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    Alfaz del Pi Spain
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    (b) Y/4

    Imagine it like this...


    Here we can clearly see that 4BC makes up the perimeter of the square, Y.

    So Y/4 = BC
    Last edited by Stone Cold; March 26th 2008 at 02:29 PM.
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  3. #3
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    Consider the unit circle, it's area is pi.

    The shaded area would be (1/2) 1 x 1, which is 1/2.

    The fraction shaded is:

    (1/2)/pi = (1/2) x (1/pi) = 1/(2pi)
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