# A wooden bookshelf has external dimensions as follows :Height = 110cm, Depth = 25cm, Breadth = 85cm

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## Question:

A wooden bookshelf has external dimensions as follows :Height = 110cm, Depth = 25cm, Breadth = 85cm (see figure). The thickness of the plank is 5 cm 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 cm^{2} and the rate of pointing is 10 paise per cm^{2}, find the total expenses required for palishing and painting the surface of the bookshelf.

**Related Book For**

## Applied Physics

ISBN: 978-0132109277

10th Edition

Authors: Dale ewen, Neill schurter, P. erik gundersen