answer is 0.31 l need basic solution manulel pls true answer is 0,31 its says

A non-conducting slab of thickness 10 m, area 25 m? and dielectric constant K-2 is inserted into the space between the plates of a parallel-plate capacitor with spacing 84 mand charge Q-4.4C as shown in Figure. The slab is not necessarily halfway between the capacitor plates. What is the capacitance of the system?.Write your answer in multiples of o write your answer in one decimal place. Gaussian surface I Gaussian surface II 0.31