Answer
The mass of the volume of water in the container is $48.13\,\mathrm{kg}$.
Work Step by Step
Volume of the rectangle = $25\times35\times55$ = $48125\,\mathrm{cm^3}$.
Density of water is $1\,\mathrm{g/cm^3}$.
Thus, the mass of the volume being a product of the density and volume is $48125\,\mathrm{g}$ or $48.13\,\mathrm{kg}$.