Parallel$-$Plate Capacitor

A parallel$-$plate capacitor with an area of $A=1\mathrm{.}22c{m}^2$ is constructed using three dielectric materials, as

shown in the fiaure below.

$1\mathrm{.}0$p $6$ You may assume that $l>>d.$ Calculate the capacitance using the values $d=2\mathrm{.}33cm,{}_1=4\mathrm{.}8,{}_2=$

$5\mathrm{.}61,{}_3=2\mathrm{.}51.$ Please multiply your final answer by ${10}^{13}.$