Question

A room is 680 cm long and 320 cm wide. It is to be paved with square marble tiles
of side 40 cm. How many such tiles will be required?​

Answer 1

Answer:

Step-by-step explanation:

area of the room = lxb = 680 x 320 cm = 217600 cm²  -----------------1

and the area of the square tiles = a² =40 x 40 = 1600 cm² -----------2

dividing (2) by (1)

$\frac{217600}{1600} = 136 tiles$

hence the answer is 136 tiles

Answer 2

Answer:

Dimensions of Room =680×320

Then area of Room will be 217600

now

dimension of Tiles = 40 x 40= 1600

Then

Number of Tiles =217600 / 1600

= 136.

hence, the number of Tiles required are 136.