The weight of the object = 872 centigrams = 8.72 gram
graduated cylander has 10ml liquid. After adding the object the voluem goes to 12.5 ml
Volume of the object = 12.4 ml - 10 ml = 2.4 ml
Density = Mass / Volume
Mass = 8.72 gm Volume = 2.4 ml
Density = 8.72 g / 2.4 ml = 3.63 g/ml
Hence the density of the object is 3.63g/ml
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