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Math Help - Area of shaded region problem

  1. #1
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    Area of shaded region problem

    Hey, I have a problem I'm not sure how to figure out, It's finding the area of the shaded region, I've attached a picture of the problem, thanks in advance!

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  2. #2
    MHF Contributor Also sprach Zarathustra's Avatar
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    Figure it up I say...

    (175+60)(144)-\frac{\pi 60^2}{4}-\frac{\pi 65^2}{2} + \frac{\pi 72^2}{2}
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  3. #3
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    so how did you figure out the (175+60)(144) part? i understand that the 175 comes from the top, but where does the 60 and 144 come from?
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  4. #4
    MHF Contributor Also sprach Zarathustra's Avatar
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    60cm is the radius of circle in the corner, 144cm=2*72cm is the diameter of circle...
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  5. #5
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    oooo okay i get it, thanks alot!
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