Mary wants to decorate her Christmas tree. She wants to place the free on a wooden block covered with coloured paper with picture of Santa Claus on it. She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm, and 20 cm respectively. How many square sheets of paper of side 40 cm would she require?

Mary wants to decorate her Christmas tree. She wants to place the tree on a wooden box covered with coloured paper with picture of Santa Claus on it (see Fig. 13.4). She must know the exact quantity of paper to buy for this purpose. If the box has length, breadth and height as 80 cm, 40 cm and 20 cm respectively how many square sheets of paper of side 40 cm would she require?

Find the surface ara of a chalk box, whose length, breadth and height are 18 cm, 10 cm, and 8 cm respectively.

A cuboidal box open at the top has length, breadth and height 20 cm, 16cm and 10 cm respectively . Find its volume.

Find the surface area of a chalk box whose length,breadth and height are 16cm,8cm and 6cm ,respectively.

Find the surface area of a chalk box whose length,breadth and height are 16cm,8cm and 6cm, respectively.

How many square sheets of coloured paper of side 30 cm would be required to cover a wooden box having length, breadth and height as 90 cm, 60 cm and 30 cm respectively ?

The volume of cuboid is 36000 cubic cm and its breadth and height is 30 cm and 40 cm respectively. What is its length?

The length , breadth and height of a cuboidal shaped box of medicine is 20 cm , 12 cm and 10 cm respectively . Find the total surface area of the box .