A symmetrical trapezoidal canal is $100 \: \mathrm{km}$ long. The bottom width is $10 \: \mathrm{m}$ and the side slope is $1$ Horizontal : $1$ Vertical. The average flow depth in the canal is $2.5 \: \mathrm{m}$ throughout the month of April. The measurement from a Class-A evaporimeter in the vicinity of the canal indicated an average evaporation rate of $0.5 \: \mathrm{~cm/day} /$ in April.
The volume of water evaporated from the canal (in $\mathrm{m}^{3}$ ) in the month of April is close to $\_\_\_\_\_$ $\times 10^{3}$ (rounded off to $1$ decimal place).
