Choose the incorrect statement from the given ones:

1. The volume of a cube of side \(1~\text{cm}\) is equal to \(10^{-6}~\text{m}^2\).
2. The surface area of a solid cylinder of radius \(2.0~\text{cm}\) and height \(10~\text{cm}\) is equal to \(1.5\times10^{4}~\text{mm}^2\).
3. A vehicle moving with a speed of \(18~\text{km/h}\) covers \(5~\text m\) in \(1~\text s\).
4. The relative density of lead is \(11.3\). Its density is \(11.3~\text{g/cm}^3\).