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Math Help - Convert in to m

  1. #1
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    Convert in to m

    How do you convert 14in^2 to m^2 ?
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  2. #2
    Senior Member Educated's Avatar
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    1 inch = 0.0254 meters

    1 inch * 1 inch = 0.0254 meters * 0.0254 meters

    1 inch squared = 0.00064516 meters squared
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  3. #3
    MHF Contributor undefined's Avatar
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    Quote Originally Posted by hydride View Post
    How do you convert 14in^2 to m^2 ?
    I like to use 1 inch = 2.54 cm as much as possible since it is an exact definition, not rounded.

    \displaystyle 14\ \text{in}^2=(14\ \text{in}^2)\left(\frac{2.54\ \text{cm}}{1\ \text{in}} \right)^2\left(\frac{1\ \text{m}}{100\ \text{cm}} \right)^2
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  4. #4
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    Quote Originally Posted by undefined View Post
    I like to use 1 inch = 2.54 cm as much as possible since it is an exact definition, not rounded.
    So as long as it is exact, you don't mind that it is wrong?
    1 inch is approximately 2.54 cm, just as 1 meter is approximately .0254 meters. Both statements have exactly the same accuracy and, in fact, say exactly the same thing.

    \displaystyle 14\ \text{in}^2=(14\ \text{in}^2)\left(\frac{2.54\ \text{cm}}{1\ \text{in}} \right)^2\left(\frac{1\ \text{m}}{100\ \text{cm}} \right)^2
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  5. #5
    MHF Contributor undefined's Avatar
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    Quote Originally Posted by HallsofIvy View Post
    So as long as it is exact, you don't mind that it is wrong?
    1 inch is approximately 2.54 cm, just as 1 meter is approximately .0254 meters. Both statements have exactly the same accuracy and, in fact, say exactly the same thing.
    I think maybe you have been misinformed.

    The yard is defined in terms of the metre. (source) I learned it as the inch being defined in terms of centimetre which amounts to the same thing.

    The metre is defined in terms of the speed of light traveling at a certain fraction of a second. (source)

    The second is defined in terms of the radioactivity of the caesium 133 atom. (source)

    By the way I wasn't contradicting Educated's post; I realise they are the same precision/accuracy. I mentioned that I like to use 1 inch = 2.54 cm as a general statement; for example, I would generally not use 1 mile \approx 1.61 km but instead convert the long way.
    Last edited by undefined; September 3rd 2010 at 10:33 AM.
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  6. #6
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    I did not understand that you were referring the to so-called "international yard".
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