The regulations set forth in Section 23-32 (Minimum Lot Area or Lot Width for Residences) pertaining to R4-1 Districts shall apply to residential uses. The regulations set forth in Section 24-20 (APPLICABILITY OF DENSITY REGULATIONS TO ZONING LOTS CONTAINING BOTH RESIDENTIAL AND COMMUNITY FACILITY USES), pertaining to R4 Districts, shall apply to buildings used partly for residence and partly for community facility use.