3.14 x 5 2 x 20 July 8, 2019 16 32 64 128 1 3 x 3.14 x 5 2 x 20 2 x 3.14 x 5^2 2 x 3.14 x 25 2 x 3.14 x 14 2 x 3.14 x 45
