4 x 20 8 12 July 8, 2019 16 32 64 128 2 x 4 20 16x 8 12x 4 18 x 6 20 x 8 12 Magnalite 12 1 4 x 20 3 8 4 8 x 20 20 x 12 x 4 4 + 4 = 12 20 x 4 =