posted by Jacinta .
Suppose you take a piece of cardboard measuring 7 inches by 7 inches, cut out square corners with sides x inches long, and then fold up the cardboard to make an open box. Express the volume V of the box as a function of x.
I knew this question sounded familiar.
I answered it two days ago.
The link shows something like the box described in the question. Disregard the cover.
(Broken Link Removed)
Width of the box = 7-x-x = 7-2x
Length of the box = 7-x-x = 7-2x
Height of the box = x
Can you calculate the volume?