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Math Help - Finding the area of square

  1. #1
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    Finding the area of square

    Square ABCD is inscribed in circle O (that is A,B,C and D all lie on the circle) and its area is a. Square EFGH is inscribed in a semicircle of circle O ( that is E and F lie on a diameter and G and H lie on the circle). What is tyhe area of square EFGH?

    The answe is 2/5 and i do not know how to get it.
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  2. #2
    Senior Member yeKciM's Avatar
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    Quote Originally Posted by rai2003 View Post
    Square ABCD is inscribed in circle O (that is A,B,C and D all lie on the circle) and its area is a. Square EFGH is inscribed in a semicircle of circle O ( that is E and F lie on a diameter and G and H lie on the circle). What is tyhe area of square EFGH?

    The answe is 2/5 and i do not know how to get it.
    draw it for your self first... after that do you have any starting idea ?
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