Question

A piece of steel has a volume of 10 cm3 and mass of 80 kg . What is its density in (a) g/cm3 (b) kg/m3.

Answer 1

Step-by-step explanation:

We have, 1 cm

3

=10

−6

m

3

So, 12 cm

3

=12×10

−6

m

3

Again, 1 g=10

−3

kg

So, 96 g=96×10

−3

kg

Therefore, density =

volume

mass

=

12×10

−6

96×10

−3

=8×10

3

kg/m

3

Hence option D is the correct answer.