The capacitance of a capacitor is calculated based on 3 values, area of plates, distance between them and epsilon zero, which is the electric permitivity at vacum.
[tex]\begin{gathered} C=\frac{A}{d}\cdot\xi0 \\ 1.11\cdot10^{-8}F=\frac{8.89\cdot10^{-4}m^2}{d}\cdot8.854188\cdot10^{-12}F/m \\ d=7.091\cdot10^{-7}m \end{gathered}[/tex]