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Posted by on Tuesday, June 9, 2009 at 6:28am.

Let ABCD be a square with side legnth 7cm. Another square KLMN is inscribed into ABCD such that its vertices lie on the sides of ABCD.
Find the lenghts of parts of ABCD sides which are divided by the vertices of KLMN. If [the area of KLMN]: [area of ABCD] = 25:49

  • maths - , Tuesday, June 9, 2009 at 9:11am

    you will have 4 congruent triangles.
    each will have legs of x and 7-x and a hypotenuse of 5
    thus x^2 + (7-x)^2 = 25

    solve as a quadratic, it factors nicely, and you should have sides of 3 and 4

  • maths - , Friday, June 19, 2009 at 3:59am

    How would you know that the hypotenuse is length 5? Does it have something to do with the ratio?

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