CREATE TABLE table_70266 ("Name" TEXT, "Years" TEXT, "Gender" TEXT, "Area" TEXT, "Authority" TEXT, "Decile" FLOAT, "Roll" FLOAT)

Which roll has an Area of mahia?
SELECT "Roll" FROM table_70266 WHERE "Area" = 'mahia'
SELECT "Roll" FROM "table_70266" WHERE "Area" = 'mahia'