CREATE TABLE table_24238 ("Nr." FLOAT, "District" CLOB, "Former Name" CLOB, "Area  (  ha  ) " FLOAT, "Population  ( 2005 ) " FLOAT, "No. of villages" FLOAT, "Density persons / ha" CLOB)

If there are 18 villages, what is the minimum area ?
SELECT MIN("Area ( ha )") FROM table_24238 WHERE "No. of villages" = '18'
SELECT MIN("Area ( ha )") FROM "table_24238" WHERE "No. of villages" = '18'