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Math Help - I hate Math

  1. #1
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    I hate Math

    Hi there I'm an engineering graduate
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  2. #2
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    Re: I hate Math

    Quote Originally Posted by SENOGLES100 View Post
    Hi there I'm an engineering graduate
    Hi, do you mind if I ask, if you hate maths, and if you have graduated, why are you here?
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  3. #3
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    Re: I hate Math

    Hi there, I am here cause one of my collegues asked me a question that I didnt know (didnt tell het that). She titled her e-mail as "I hate Maths" hence why. Perhaps you could help.

    A hemispherical dome of radius r metres has a volume of V given by V=2/3 pie r cubed

    If the error in measuring V is dV and the corresponding error in calculating r is dr, obtain a formula giving a good approximation for dr I'm terms of V and dV.

    Calculate the value of r and the maximum error in dr when the volume 525 m cubed with a maximum error of 0.5m cubed. To 4 Sig fig
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  4. #4
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    Re: I hate Math

    We have dV = 2\pi r^2dr, so dr can be expressed through dV and r. Further, r can be expressed through V. If I am not mistaken, dr=\frac{dV}{(2\pi)^{1/3}(3V)^{2/3}}.
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  5. #5
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    Re: I hate Math

    That title made my day.
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