Hi guys, heres another great optimisation problem Just having a bit of trouble getting the right equations etc any help appreciated. Also as is stated in the brackets a net of the shape is required. As usual any help is appreciated. Thanx.

Question: Consider a rectangle of perimeter 60Cm. Form a cylinder by revolving this rectangle about one of its edges. What dimensions of the rectangle will result in a cylinder of maximum volume? (Include a net of the final shape)