circles and squares

http://img31.imageshack.us/img31/5038/27724145.png
there is a circle, enclosed by the circle is a square, another square is enclosed in the top half of the larger square there is a another enclosed square.
need to proof:
the area of the bigger squere is 2.5 times the smaller square.

Quote:

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Originally Posted by omer20

http://img31.imageshack.us/img31/5038/27724145.png
there is a circle, enclosed by the circle is a square, another square is enclosed in the top half of the larger square there is a another enclosed square.
need to proof:
the area of the bigger squere is 2.5 times the smaller square.

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