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Math Help - Area of a semi circle

  1. #1
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    Area of a semi circle

    i know that the formula for finding the area of a circle is 1/2pi(r^2)

    now if i get an answer of 2pi and if i wanted to find half of the semi circle's area can i just divide 2pi by 2 and i would just get pi.... is that appropriate????
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Area of a semi circle

    Yes, if you split an area into two equal portions, then each half has the area of the original divided by 2.
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  3. #3
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    Re: Area of a semi circle

    another question.... if i add

    1 + 2pi + 4 would i get 7pi?
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  4. #4
    MHF Contributor MarkFL's Avatar
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    Re: Area of a semi circle

    No, you would get 5 + 2π.
    Thanks from asilvester635
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  5. #5
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    Re: Area of a semi circle

    yes that's what i thought... thank you
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