Answer:
256 in
Step-by-step explanation:
Let the
length of the box=12 in
Width=5 in
Height=4 in
Surface area of a box can be calculated using 2lw+2lh+2wh
= 2(lw+lh+wh)
Where
lw=length×width
lh=length×heigth
wh=width×height
Therefore,
Surface area of a box=2(lw+lh+wh)
=2{(12×5)+(12×4)+(5×4)}
=2(60+48+20)
=2(128)
=256 in^3
