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2014-07-26T23:57:26+05:30

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Wire length = perimeter of rectangle = 2 * (6+4) = 20 cm
So Sector length = 20 cm, as perimeter of rectangle now becomes the arc / sector.

But sector length = Radius R * arc angle in radians, Ф
         20 cm = 5 cm  *  Ф  => Ф = 4 radians    =  4 * 360 / 2 * 3.14  degrees
                       as 2 pi  radians = 360 degrees ie., a full circle.
please calculate the result.

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