20 x 13 5 July 8, 2019 16 32 64 128 20 x 13 50 3 5 x )+ 13 20 5 6 20 x 13 x 5 cm 20 11 13 x 5 13 20 x 500 20 8 x 13 x 5 4 20 5 x 4 5 13 13 x 20 x 52 20 53 13 x Solve x 5 13 20