Answer
See Solution
Work Step by Step
Eq(17-8): $C=\epsilon_0\frac{A}{d}$
Eq(19-5): $C_{eq}=C_1+C_2+C_3$
$V_{eq}=V_1=V_2=V_3$
$Q_{eq}=Q_1+Q_2+Q_3$
$Q=VC=V\epsilon_0\frac{A}{d}$
$Q_{eq}=V\epsilon_0\frac{A_1}{d_1}+V\epsilon_0\frac{A_2}{d_2}+V\epsilon_0\frac{A_3}{d_3}$
$\frac{Q_{eq}}{V}=\epsilon_0\frac{A_1}{d_1}+\epsilon_0\frac{A_2}{d_2}+\epsilon_0\frac{A_3}{d_3}$
$C_{eq}=C_1+C_2+C_3$
