Answer
$Q=4.9\times 10^{-10}C$
Work Step by Step
We know that:
$E=\frac{\sigma}{\epsilon_{\circ}}$
This can be rearranged as:
$\sigma=\epsilon_{\circ}E$
We plug in the known values to obtain:
$\sigma=8.85\times 10^{-12}(55)=4.9\times 10^{-10}\frac{C}{m^2}$
We also know that:
$\sigma=\frac{Q}{A}$
This can be rearranged as:
$Q=\sigma A$
We plug in the known values to obtain:
$Q=4.9\times 10^{-10}(1.0)=4.9\times 10^{-10}C$
