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     EduGorilla 
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    If the radii of the four concentric circles in the given figures are 3 cm, 4 cm, 12 cm and 13 cm respectively. Find the area (shaded) that remains after cutting two washers.

    Options :-

    1. 432.50
    2. 440.50
    3. 430.57
    4. 431
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