A parallel plate capacitor has plate area $A=0.04{\text{m}}^2$ and plate separation $d=2.0\text{mm}$. A dielectric slab of dielectric constant $K=4$ and thickness $t=1.0\text{mm}$ is inserted between the plates. What is the capacitance of the capacitor? (${\epsilon }_0=8.85\times 10^{-12}\text{F/m}$)