check the picture below.
[tex]\bf A)\\\\
V(w)=(w+2)(w)\left( \cfrac{w+2}{4} \right)\implies V(w)=(w^2+2w)\left( \cfrac{w+2}{4} \right)
\\\\\\
V(w)=\cfrac{w^3+2w^2+2w^2+4w}{4}\implies V(w)=\cfrac{w^3+4w^2+4w}{4}
\\\\\\
B)\\\\
V(10)=\cfrac{(10)^3+4(10)^2+4(10)}{4}\implies V(10)=\cfrac{1000+400+40}{4}
\\\\\\
V(10)=360[/tex]
what does it tell us? hmmm when w = 10, h = 3 and l = 12, that just means is a short fat box like the one in the picture.
