Question

The density of copper is 9.86 g/cm".

Work out the mass of the solid copper cuboid in kg.
10 cm
3 cm
5 cm

Answer 1

volume of copper cuboid(V) =10cm×3cm×5cm=150cm³=150/10⁶ m³=1.5×10-⁴ m³

density of copper(d)=9.86×10-³+²=0.986 kg/m

we know,

mass=V/d=1.5×10-⁴/0.986=1.47×10-⁴ kg