How a cube can give you a head ache !!!

A cube is just floating inside water with a \(200 g\) mass placed on it .
When the \(200 g\) mass is removed, the cube is \(2 cm\) above water level.
Find the edge of the cube, in cm.

Density of water = \(1\frac { g }{ { cm }^{ 3 } }\)

Image credit: Wikipedia AdriannaNicole

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