Jawabanya 18 gan, Penjelasan 11 X 11 = 121 =>> 1 + 2 + 1 = 4 22 X 22 = 484 =>> 4 + 8 + 4 = 16 33 X 33 = 1089 =>> 1 + 0 + 8 + 9 = 18 Jika 11 X 11 = 4 ; 22 X 22 = 16 Maka 33 X 33 = 18
