Related Post: 2 X 6 )+ 2 4x 4 2 X 6 2 4 X 2 5x 6 X 2 4x 4 (- 6x 2 X 6 )-( 4x 2 6x 4 2 X 2 6 4 3 2 X 8 )+ 4x 6 X 2 )- 4 2 7x 4 )= 4x 6 2 X )+ 7 2 X 4 Length