A mason has to fit a bathroom with square marble tiles of the largest possible size. The size of the bathroom is 10 ft. by 8 ft. What would be the size in inches of the tile required that has to be cut and how many such tiles are required?

The dimensions of the floor of a rectangular room are 3m 60cm xx 5m 40cm . It has to be covered with square tiles. What is the dimension of the largest square tile that can be fitted ? How many such tiles are required to cover the floor?

A room measures 960 cm by 768cm. Find the quantity and the size of the largest square tiles that will be required to cover the floor.

How many square tiles of side 20cm are required to cover the floor of a square room of side 4m?

What is the minimum number of tiles of size 16 by 24 required to form a square by placing the tiles adjacent to one another other?

Copper has a face - centred cubic structure with a unit - cell edge length of 3.61Å . What is the size of the largest atom which could fit into the intersectices of the copper lattice without distorting if ?

A copper wire has a square cross section of 6 mm on a side. The wire is 10 m long and carries a current of 3.6A. The density of free electrons id 8.5x10^(28)//m^3. Find the magnitude of (a) the current density in the wire , (b) the electric field in the wire. (c ) How much time is required for an electron to travel the length of the wire? ("rh, electrical resistivity, is" 1.72 xx10^(-8) Omegam.)

A rectangular hall is 18 m 72 cm long and 13 m 20 cm broad. It can be paved with square tiles of the same size.Find the least possible number of such tiles.

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?