NEED HELP again

I purchased four hand-crafted glass sculptures at the county fair. Each of the sculpture was shaped like a rectangular prism, as shown. How much glass was used to make the four hand-crafted glass sculptures?

240 in.2

240 in.3

424 in.3

464 in.3

Answer) B. 240in.3
This picture explains how I got the answer

Thats where they was ported and the fields that noone really knew much about needed tended, so they put slaves out there do free work and huge profits and so on the north decided to hold its own and was more different way of survival did not have same climate conditions to afford protecting slaves from winter so expenses be diff from south