CREATE TABLE table_34899 ("Number" FLOAT, "Name of administrative unit" TEXT, "Telephone  ( 052 ) " TEXT, "Area  ( km 2  ) " FLOAT, "Population  ( people ) " FLOAT)

Which area has a telephone of (052) of 3862279?
SELECT "Area (km 2 )" FROM table_34899 WHERE "Telephone (052)" = '3862279'
SELECT "Area (km 2 )" FROM "table_34899" WHERE "Telephone (052)" = '3862279'