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Find the area of the shaded …

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Find the area of the shaded region. If the radii of two concertic circles with Centre O are 7 cm and, 14 cm respectively and angle AOC =40°

    • Posted by Sakshi Kumari 4 years, 11 months ago

    CBSE > Class 10 > Mathematics
    • 1 answers

    Yogita Ingle 4 years, 11 months ago

    Given O is a centre of a concentric circles.

    Let r =OB = 7cm

    R = OA = 14cm

    <AOC = 40°

    We know that,

    Now ,

    Area of the shades region

    = Area of the sector AOC - Area of the sector ABD

    = 

    =

    =

    =

    =

    = 

    Therefore,

    Area of the shaded region =

    0Thank You

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