Question

A square tile is having 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

Answer:

20 tiles

Step-by-step explanation:

1m = 100cm

3m = 300cm

300 divided by 15

Answer = 20 tiles

Answer 2

Answer:

400 tiles

Step-by-step explanation:

at first area covered by one tile = 15 ×15 = 225 cm square.

now area of floor ( better to be converted in cm square ) = 3 m = 300 cm .

area of floor = 300×300 = 90000 cm square

number of tiles needed to cover the floor =

area of floor / area of one tile

90000 / 225 = 400 tiles