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    helphelphelpme's Avatar
    helphelphelpme Posts: 3, Reputation: 1
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    #1

    Nov 1, 2007, 12:09 PM
    Length of diagonal of square
    Just got home from school. Must not have paid attention in class today haha.


    What is the length of the diagonal of a square whose side lengths are 7 square root of 2?
    DonnieLSD's Avatar
    DonnieLSD Posts: 29, Reputation: 6
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    #2

    Nov 1, 2007, 12:11 PM
    I don't follow the question. Do all of the sides measure 7? And are you trying find the distance from corner to corner?
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
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    #3

    Nov 1, 2007, 12:32 PM
    Draw yourself a picture. A square's diagonal is the hypotenuse of a right triangle where the other two sides are the length of the square's side. Just use The Pythagorean equation
    helphelphelpme's Avatar
    helphelphelpme Posts: 3, Reputation: 1
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    #4

    Dec 3, 2007, 12:04 PM
    So I do 7^2+7^2=C^2

    Meaning: 49+49=C^2
    98=C^2

    So or the answer I should write 9.899 or 9.9 correct?
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
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    #5

    Dec 3, 2007, 12:41 PM
    you've got the right idea. You just used the wrong data. You said that the side was , not 7. Replace your 7s with the real side length and you'll be good to go.
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