The electric filled at a distance of $0\mathrm{.}139$ m From the surface of a solid insulating Sphere with radio $0\mathrm{.}388$ m is $1660$ N$/$C$.$ Assuming the spheres charge is uniformly distributed what is the charge density inside it$.$ Calculate the electric field inside the sphere at a distance of $0\mathrm{.}229$ M from the center