CREATE TABLE table_8109 ("Result" TEXT, "Race" TEXT, "Distance" TEXT, "Weight" FLOAT, "Winner or 2nd" TEXT, "Pos'n" TEXT)

What weight has a distance of 8F, and RRC Hill Stakes (wfa) as the race?
SELECT "Weight" FROM table_8109 WHERE "Distance" = '8f' AND "Race" = 'rrc hill stakes (wfa)'
SELECT "Weight" FROM "table_8109" WHERE "Distance" = '8f' AND "Race" = 'rrc hill stakes (wfa)'