CREATE TABLE table_66793 ("Municipality" TEXT, "Population" FLOAT, "Area km\\u00b2" FLOAT, "Density Population per km\\u00b2" FLOAT, "Area" TEXT, "County" TEXT)

What is the Area of the town with a Population Density of 36 km and a population greater than 3,546?
SELECT SUM("Area km\u00b2") FROM table_66793 WHERE "Density Population per km\u00b2" = '36' AND "Population" > '3,546'
SELECT SUM("Area km\u00b2") FROM "table_66793" WHERE "Density Population per km\u00b2" = '36' AND "Population" > '3,546'