Question

A piece of iron has a volume 50 cm³ and mass 390g find the density of the iron a)kg/m³ b)g/cm³

Answer 1

Step-by-step explanation:

b)m=390g

V=50cm³

D=m/V

D=390/50

D=7.8g/cm³

a)m=39/100kg

V=50×1×1×1/100×100×100

V=50/1000000=5/100000

V=1/2000m³

D=m/V

D=(39/100)÷(1/2000)

D=39/100×2000

D=39×20

D=780kg/m³