A dustbin in the form of a frustum of a cone is mounted on the circular base of a hollow cylinder as shown in the figure. The radii of circular top and bottom of the dustbin and its slant height are 18 cm, 8 cm and 26 cm respectively. The radius and height of the cylinder are 8 cm and 6 cm respectively. If the total height of the given solid is 30 cm, then find the volume of the dustbin and also the curved surface area of the entire solid
