Got a cylinder with no top.
250 square cm's of fiberglass.
r cm's would represent the base radius of this cylinder. What is the cubic function? What are the dimensions of the cylinder when it has 200mL in it? Not only what is it, how did you get it ... this could really come in handy later on for me.
I was thinking along the lines of V=pir^2h ... C=2r ... = 2pir+pir^2 ... whaaaaat the ...
What this has to do with boxes ... you shall see.