Two non conducting solid cones of height H and radius R are are kept head on.the volume charge density of the two cones is equal and opposite.find dipole moment

ASSUME THAT THE ENTIRE CHARGE OF THE TWO CONES IS CONCENTRATED AT THEIR CENTRE OF CHARGE(SAME AS CENTRE OF MASS) i.e DISTANCE BETWEEN THE TWO  CHARGES IS 2x3H/4=3H/2 AND TOTAL CHARGE (MAGNITUDALLY) BE 1/3PIE(R)²Hx VOLUMETRIC CHARGE AND  MULTIPLY BOTH TO OBTAIN DIPOLE MOMENT.