Flux through a hemisphere

A hemispherical surface of radius $R=0.20\mathrm{m}$, without its base, is immersed in a uniform electric field of magnitude $5.0\cdot 10^{3}N/C$, parallel to the axis of symmetry of the hemisphere and directed from the plane of the base toward the top. Compute the flux of the field through the hemispherical surface, oriented with the normal pointing toward the convex side.