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Math Help - square root answer / problem

  1. #1
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    square root answer / problem

    not surehow for 1.27 a the answer is a sqrt 2 and for b the answer is a/sqrt 2 can any one kindly go through the steps as this as been bugging me for days. many thanks

    square root answer / problem-math.jpg
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  2. #2
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    Re: square root answer / problem

    Quote Originally Posted by davellew69 View Post
    not surehow for 1.27 a the answer is a sqrt 2 and for b the answer is a/sqrt 2 can any one kindly go through the steps as this as been bugging me for days. many thanks

    Click image for larger version. 

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    If:
    Code:
             /|
            / |
         a /  |
          /   | L
         /    |
        /     |
       /      |
       --------
          L
    Then a = \sqrt 2  \cdot L
    So L = \frac{a}{{\sqrt 2 }}.
    That's what the solution says.
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