Example 1 : Mary wants to decorate her Christmastree. She wants to place the tree on a wooden boxcovered with coloured paper with picture of SantaClaus on it (see Fig. 13.4). She must know the exactquantity of paper to buy for this purpose. If the boxhas length, breadth and height as 80 cm, 40 cm and20 cm respectively how many square sheets of paperof side 40 cm would she require?

Example 1 : Mary wants to decorate her Christmastree. She wants to pla

1.	Example 1 : Mary wants to decorate her Christmastree. She wants to place the tree on a wooden boxcovered with coloured paper with picture of SantaClaus on it (see Fig. 13.4). She must know the exactquantity of paper to buy for this purpose. If the boxhas length, breadth and height as 80 cm, 40 cm and20 cm respectively how many square sheets of paperof side 40 cm would she require?
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