algebra
posted by cindy on .
carl has a box with a length width and height of 12 inches. she needs a box that is 4 inches longer, not as high, yet still has exactly the same width and volume.
what are the new dimensions?
which box requires more material to construct?
PLEASE HELP ME!! :(

Here is a start. Find volume, then new height.
12^3 = Volume = 12 * (12+4) * h
Original box = 12^2 * 5 = material.
New box = 12(12+4) + 2(12h) + 2(12+4)h = material 
a volume is 864 what is the length width and height if length and width are the same and height is half of width and length