Question 425787
The surface of a cylinder is composed of two parts: the areas of the bases and the lateral surface area. If the base is assumed to be a circle, the area of one base is just {{{pi*r^2}}} so the area of both these bases is {{{2pi*r^2}}}. The lateral surface area is essentially a rectangle with height h and base equal to the circumference of the circle. The circumference is {{{2pi*r}}}, so the lateral surface area is {{{2pi*r*h}}}. Add this with {{{2pi*r^2}}} to obtain the surface area.