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Sketch the shape onto a uniform lamina and cut it out accurately.
Suspend the lamina from any point on its perimeter and mark the vertical from the point of suspension. Repeat from another point on the perimeter. The two vertical lines should meet at the centroid. In order to confirm your result, repeat another time.
As a final test, balance the lamina from the point so found. It should remain horizontal.
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∙ 8y ago
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