Question

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

Answer 1

Answer:

240

Step-by-step explanation:

Area of wall = 4×3 = 12m^2

Area of tile = (20/100)×(25/100) =

1/20 m^2

Number of tiles required= 12/(1/20)

= 12×20

= 240

Answer 2

Area of tiles(in metres)=0.20×0.25=0.5 m×m
Area of wall =4×3=12 m×m



Number of tiles=Area of wall /Area of tiles

=12/0.5=24