A container has a base of  $50cm\times 5cm$ and height 50 cm, as shown in the figure. It has Two parallel electrically conducting walls each of area  $50cm\times 50cm$. The remaining Walls of the container are thin and non-conducting. The container is being filled with A liquid of dielectric constant 3 at a uniform rate of  $250c{m}^3{S}^{-1}$. What is the value of the value of the capacitance of the container after 10 seconds?
[Given: Permittivity of free space ${\in }_0=9\times {10}^{-12}{C}^2{N}^{-1}{m}^{-2}$, the effects of the non-conducting walls on the capacitance are negligible]