Question

An iron sphere of radius 0.18m has mass 190 kg. Calculate the density of the iron

Answer 1

• radius=r=0.18m

Volume:-

`\\ \sf\rightarrowtail (4)/(3)\pi r^3`

`\\ \sf\rightarrowtail (4)/(3)\pi (0.18)^3`

`\\ \sf\rightarrowtail (4)/(3)\pi (0.005832)`

`\\ \sf\rightarrowtail 0.024m^3`

• Mass=190kg

Density:-

`\\ \sf\rightarrowtail (Mass)/(Volume)`

`\\ \sf\rightarrowtail (190)/(0.024)`

`\\ \sf\rightarrowtail 7916.67kg/m^3`