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Math Help - Length of the diagonal of a square when perimeter is known.

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    Length of the diagonal of a square when perimeter is known.

    What is the approximate length of
    the diagonal of a square if the
    perimeter of the square is 12 ft?
    Last edited by mr fantastic; June 7th 2010 at 04:18 PM. Reason: Re-titled from "Math".
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  2. #2
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    Quote Originally Posted by DOOKIE View Post
    What is the approximate length of
    the diagonal of a square if the
    perimeter of the square is 12 ft?
    what is your take on this problem?
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  3. #3
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    Quote Originally Posted by DOOKIE View Post
    What is the approximate length of

    the diagonal of a square if the
    perimeter of the square is 12 ft?
    Can you find the sidelength of the square?

    Have you learned Pythagoras' Theorem?
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    Yes.
    Last edited by mr fantastic; June 7th 2010 at 04:42 PM. Reason: Made formatting more sensible.
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    Quote Originally Posted by DOOKIE View Post
    Yes.
    If you know the sidelength and you know Pythagoras's theorem then you can find the diagonal. If you want more help, show all your working and say where you're stuck.
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