20 4x 8x 8 July 8, 2019 16 32 64 128 20 4x 8x 8 28 8x 20 4x 8 180 8x 4y 20 4x 8y 4 8x 20 12x 4x 8 10x 20x 4 4 8 x 20 20 x 8 =
