Question

a room is 4 m 50 cm long and 3 m 24 cm wide. how many glazed square tiles with side 9 cm will be enough to cover its floor

Answer 1

area of room
length× breadth
4.50×3.24=14.58 cm2

number of tiles = 14.58/(0.9)^2
=18.

Answer 2

first we find room area= lb=(450)×(324)

=145800cm²...(1)

now we find tiles area=9²=81cm²

cover tiles in floor=145800/81

=1800....is your answer