Question

how many square tilese of sides 4cm are needed to cover a wall of size 4m by 3.6m​

Answer 1

Answer:

Size of wall = 4m by 3.6m

So, total area of wall = (4 × 3.6)m²

= 14.4 m²

= 14.4×10000 = 144000cm²

Now, area of 1 Square tiles = 4²

= 16cm²

So, no. of tiles required to cover wall = 144000/16

= 9000 tiles