Question

A room measure 12 m × 9 m . the floor of the room is to be covered by marbel tiles measuring 45cm by 30 cm . how many tiles are needed​

Answer 1

length of room=12m

breadth of room=9m__given

area of floor=12m×9m

=108m^

=1080000cm^

again,

measure of tile=45cm by 30 cm

area of a tile=45cm×30cm

=1350cm^

no. of tiles needed=1080000cm^/1350cm^

=800 tiles.

Answer 2

$\huge\mathbb\pink{Solution- }$

Given that,

Length of room = 12 m

Breadth of room = 9 m

So area of the room= length × breadth

=(12 × 9) m^2

= 108 m^2

= 1080000 cm^2

Also given that,

Area of tiles = (45 × 30) cm ^2

• =1350 cm^2

Number of tiles required =1080000/1350

• = 800 tiles.