Tuesday, September 27, 2011

Problem of the Day 27 Sept 2011


The diagram below shows some small squares each with area 3 enclosed inside a larger square. Squares that touch each other do so with the corner of one square coinciding with the midpoint of a side of the other square. Find integer n such that the area of the shaded region inside the larger square but outside the smaller squares is n



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5 comments:

  1. Can anyone explain this problem?

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  2. Each small square is of area 3 hence, the side of squares is root3

    hence the side of big sqaure is root3 +2root6

    hence the required shaded area

    area of big square - area of 9 small squares

    (root3 +2root6)^2 -27=rootn

    =>3+24+4root18-27=rootn
    =>root(16x18)=rootn
    =>n=288

    Hope that helps

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