The mass of a 30 cm3 stone is 180 g.

a. Calculate its density.

b. The stone is broken into two pieces. What is the density of each piece?

c. The smaller piece weighs 80 g. Calculate its volume

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a. Solution ,

Given volume (V)=30cm^3

Mass = 180 g

Density =?

We know that,

Density = given mass/volume

Or. 180/30

=6g/cm^3

b. We know ,

If any pice of stone have equal density so each piece have 6g/cm^3

c. We know ,

Given weight = 80g

Density = 6g/cm^3

Volume =?

We know that,

Volume = given weight ( mass)/ density

= 80/6

= 13.33 cm^3