The top and bottom of the cylinder's area is found via Pi*r2
the lateral surface if found 2*pi*h
Volume = pi* radius2 * h
I am only given volume, = 500cm3
Also for each square cm of the top and bottom its 10 cents to make, and for the lateral surface its 7 cents to make.
I don't know where to make the connection with all the information to formulate a formula for r to cost; C(r)=