1 3 x 12 2 x 9 July 8, 2019 16 32 64 128 2x 1 3 4x x 2 12 x 2 4 9 X 1 3 x 9 12 x 2 6 x 1 4 1 3 x pi x 12 2 x 9 1 3 x 9 4 x 12 2 1 3 x 3.14 x 9 2 x 12 1 3 x pi x 9 2 x 12 in terms of pi 1 3 4 x 9 1 2 x 12 lvl 1 + 12 + 2 + 3 12 ×1=12