CREATE TABLE table_76459 ("Place" TEXT, "Code" FLOAT, "Area  ( km 2  ) " FLOAT, "Population" FLOAT, "Most spoken language" TEXT)

What is the lowest area for cannonvale that speaks afrikaans?
SELECT MIN("Area (km 2 )") FROM table_76459 WHERE "Most spoken language" = 'afrikaans' AND "Place" = 'cannonvale'
SELECT MIN("Area (km 2 )") FROM "table_76459" WHERE "Most spoken language" = 'afrikaans' AND "Place" = 'cannonvale'