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 ?

Find the volume of a box if its length, breadth and height are 20 cm, 10 cm and 30 cm respectively.

Find the volume of a box if its length, breadth and height are 20 cm,10.5 cm and 8 cm respectively.

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

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.

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 the given figure). 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 ?

How many cubes of side 3 cms each can be cut from wooden block in the form of a cuboid whose length, breadth and height are 21 cm, 9 cm and 8cm respectively.How much volume of wood is wasted ?

How many cubes of side 3 cms each can be cut from wooden block in the form of a cuboid whose length, breadth and height are 21 cm, 9 cm and 8cm respectively. How much volume of wood is wasted?