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how can I find the area of these two fractal?

I've been try to solve some geometry exercises here but this and some other are so much difficult.

enter image description here

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Only the "pentagrams arms" (disregarding the centers of pentagrams) –  John Smith Nov 4 '12 at 18:19
Please be more explicit about exactly how this fractal is to be constructed, and what set you want the area of. –  Robert Israel Nov 4 '12 at 20:47

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