A wooden bookshelf has external dimensions as follows . Height=110cm, depth=25cm, breadth=85cm. the thickness of the plank is 5cm everywhere. The external faces are to be polished and the inner faces are to be painted.if the rate of polishing is 20 paise per square cm and the rate of painting is 10paise sq cm.find the total expenses required for polishing and painting the surface of the bookshelf