<image>As shown in the figure, the shaded part of the rectangle is cut out (the quadrilateral in the middle is a square) and can form a cylinder. Suppose the radius of the circle is r.



(1) Express the volume of the cylinder in terms of r;
(2) When r = 2 cm and the value of π is taken as 3.14, find the volume of the cylinder (rounded to the nearest unit).