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Three circles are pairwise externally tangent, as shown below. The circles have radii of 1 meter, 2 meters and 4 meters. In square meters, what is the area of the polygon formed by connecting the centers of the circles? 

 

 Jul 8, 2022
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It seems that the centers of the circles form a triangle. Can you find the lengths of this triangle using radii? How can we find the area after finding the lengths of a triangle?

 Jul 8, 2022

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