The edge of a metal cube is $3 cm$. A rectangular box is filled with $30$ such cubes. Calculate the internal volume of the box.

A box, cuboid in shape, measures $250 cm$ by $88 cm$ by $h cm$ and volume $4840 c{m}^3$. $120$ such metal bars fit exactly in the box. Find h.

How many square glazed tiles of side $8 cm$ will be required to cover the walls of a room $4 m$ by $3 m$ by $2 m$?

If $25$ tiles cost $₹ 40$, find the cost of tiling the walls of the room.

A $4 cm$ edge cube is cut into $1 cm$ edge cubes. Calculate the total surface area of all the small cubes.

From a rectangular sheet of metal $48 cm$ by $36 cm$, a square with side $8 cm$ is cut off from each of its corners. An open box is made of the remaining sheet. Find the volume of the box.