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Each side of an equilateral triangle is equal to the radius of a circle whose area is `154\ c m^2dot` The area of the triangle is (a)`(7sqrt(3))/4\ c m^2` (b) `(49sqrt(3))/2\ c m^2` (c)`(49sqrt(3))/4\ c m^2` (d) `(7sqrt(3))/2\ c m^2`

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