CREATE TABLE table_68177 ("Name" TEXT, "Population  ( 2011 ) " FLOAT, "Population  ( 2006 ) " FLOAT, "Change  ( % ) " FLOAT, "Area  ( km\\u00b2 ) " FLOAT, "Population density" FLOAT)

What was the area in Glenella with a population of 522 in 2011?
SELECT AVG("Area (km\u00b2)") FROM table_68177 WHERE "Name" = 'glenella' AND "Population (2011)" < '522'
SELECT AVG("Area (km\u00b2)") FROM "table_68177" WHERE "Name" = 'glenella' AND "Population (2011)" < '522'