10 1 4 x 3 5 July 8, 2019 16 32 64 128 10 1 2 x 5 3 4 2x 1 2 4 x 3 2 5x 10 7 10 1 4 x 3 5 2 5 10 x 4 )- 1 3 2x 5 10 1 4 x 8 3 5 10 x 3 )- 1 (- 9x 4 )= x 5 3 4 1 3 x 10 5 6 3 1 4 x 10 to 5 round duct transition 10 1 2 x 5 3 4 x 15 4 1 5 x 3 10 area 3 20x 1 10 x 4 1 5 2 5x 10 − 3 2x 1 )+ 4 x 5
