Question

a marble tile measures 25 CM by 20 cm how many tiles will be required to cover a wall
4 m by 3 m

Answer 1

area of tiles equal to20*25=500
area of wall equal to400*300=120000
number of tiles equal to120000/500
=240

Answer 2

Area of Wall = 4×3 m
= 12m = 1200cm
Ar of tiles = 25×20
= 500cm

No. Of tiles required = 1200/500
=2.4

Hope this is helpful