Find the energy stored in the hemispherical region r < 2 m, 0 < < , where E = 2r sin cos ar + r

Find the energy stored in the hemispherical region r < 2 m, 0 < θ < π, where
E = 2r sin θ cos Φ ar + r cos θ cos Φ aθ – r sin Φ aΦ V/m
exists.