Textbook: 1.3 Page 33 - Question #9

9) Examine the bookshelf. It is constructed of thin hardwood. The top, bottom and all three shelves are the same size. There is an equal distance between the top, the shelves and the base. 

a) What is the surface area of one shelf? Include both sides, but ignore the edges. 

b) What is the total surface area of the bookcase?

c) What is the fewest number of surfaces for which you need to find the surfaces area in order to answer part b)?

Only three surface areas need to be calculated. (back, shelf, side)