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Answer: as we know that centriod of cirle divides the triangle in 2:1 ratio so length of AD( perpendicular to bc) = 4 + 2 = 6 so in triangle ABD tan60 = AD/BD
So BD = 2root3
Therefore , BC 4 root3
Then area of triangle will be 12 root3
Area of circle = 16 pie
Now subtract the circles area with triangle area and the divide the result with 3
You will get your answer
Hope this will help you
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