3.14 x 4 2 x 10 July 8, 2019 16 32 64 128 3.14 x 4 2 x 10 3 1 3 x 3.14 x 4 2 x 10 3.14 x 0.3 x 10 − 3 2 / 4 1 4 x 3.14 x 10 2 3.14 x 2 x 4 3.14 x 2 x 10 3.14 x 4 x 4 3.14 x 4^2 x 9