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Math Help - Area of a triangle

  1. #1
    Senior Member Mukilab's Avatar
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    Area of a triangle

    Calculate the area of a triangle with sides 4.2, 5.3, 7.6 cm

    I used heron's formula (\sqrt{s(s-a)+s(s-b)+s(s-c)}) to get 8.55cm^2 as an answer. Is this correct?
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  2. #2
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    area of triangle

    Quote Originally Posted by Mukilab View Post
    Calculate the area of a triangle with sides 4.2, 5.3, 7.6 cm

    I used heron's formula (\sqrt{s(s-a)+s(s-b)+s(s-c)}) to get 8.55cm^2 as an answer. Is this correct?
    Hi Mukilab,

    This formula you quote is incorrect

    bjh
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  3. #3
    Senior Member Mukilab's Avatar
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    aha, thanks for that
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