Question 348109
let width of sheet be x cm
length = x+6cm
...
width of box = x-16 cm
width of sheet = x+6-16=x-10cm
height = 8
....
Volume of box = L*W*H
(x-16)(x-10)*8
(x^2-26x+160)*8
8x^2-208x+1280 cm^3