the area. $($Enter the magnitudes.$)($a$)$ parallel to the plates $\backslash [\backslash$mathrm$\{$N$\}\backslash$cdot $\backslash$mathrm$\{$m$\}^\{2\}/\backslash$mathrm$\{$C$\}\backslash ]($b$)$ perpendicular to the plates $\backslash [\backslash$mathrm$\{$N$\}\backslash$cdot $\backslash$mathrm$\{$m$\}^\{2\}/\backslash$mathrm$\{$C$\}\backslash ]($c$)$ the normal to the area making a$30$angle with the direction of the electric field; note that this angle can also be given as$180+30\backslash [\backslash$mathrm$\{$N$\}\backslash$cdot $\backslash$mathrm$\{$m$\}^\{2\}/\backslash$mathrm$\{$C$\}\backslash ]$