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Math Help - Density of Human Body Question

  1. #1
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    Density of Human Body Question

    The density of the human body is estimated to be 0.95 g/cm^3
    Calculate the volume of a person wighing 79.99kg
    Express your answer in the form a x 10^n, where n is and element of N and 1 <a<10
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  2. #2
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    Well

    0.95g = 1cm^3 = 0.00095kg
    79.99kg = x cm^3

    \frac{79.99}{0.95}=what you want
    u know how to convert that to the notation needed?
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  3. #3
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    Quote Originally Posted by ZettaDigit View Post
    The density of the human body is estimated to be 0.95 g/cm^3
    Calculate the volume of a person wighing 79.99kg
    Express your answer in the form a x 10^n, where n is and element of N and 1 <a<10
    Density is defined by: density = \dfrac{mass}{volume} thus volume = \dfrac{mass}{density} .

    With your example you have:

    V=\dfrac{79.99\ kg}{0.95\ \frac{g}{cm^3}}

    You have to convert the mass unit into g:

    V=\dfrac{79990\ g}{0.95\ \frac{g}{cm^3}}=84200\ cm^3

    And now change the notation of this result as required.
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