A long pipe of outer radius $R_1=3\mathrm{.}10cm$ and inner radius $R_2=2\mathrm{.}64cm$ carries a uniform charge density of $5\mathrm{.}22m\frac{C}{m^3}.$

Assuming that the pipe is sufficiently long to consider it infinitely long, use Gauss's law calculate the electric field $E$ at a distance $r=6\mathrm{.}51cm$ from the centerline of the pipe. Use ${}_0=8\mathrm{.}85{10}^{-12}\frac{C^2}{N}*m^2$ for the the permittivity of free space.

$E=$

$$

$\frac{N}{C}$