Question

a square tile is having a side of length 15 cm how many such tiles would be required to cover the square floor of a bathroom of side 3 m

Answer 1

area of square tile=225cm^2
area of bathroom=90000cm^2
no. of tiles=90000/225
=400 tiles

Answer 2

There is requirement of 400 tiles to cover the 3 metered square floor of bathroom.