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Let the edge of cube be l. When mass is on the cube of wood
200g + l3dwoodg = l 3waterg
? l3dwood = l 3water – 200 …..(i)
When the mass is removed
l3dwood = (l-2) l2dwater …..(ii)
From (i) and (ii)
l3dwater – 200 = (l-2) l2dwater
But dwater = 1
? l3 – 200 = l2 (l-2)
? l = 10cm
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