Question

sibi wants to cover the floor of a room 5m long and width 4m by sq.tiles. If the area of each square tiles is (1/2)meter square , then find the number of tiles required to cover the floor of a room.

Answer 1

Area of the room=4m*5m=20m^2

Now,

number of tiles=area of room/area of tiles

=20m^2/1/2m^2

=20*2=40

The answer is 40.

Thanks

Answer 2

Given, length of the room = 5 m

width of the room = 4 m

Find the area :
--------------------

area of the room = length × width

= 5 × 4 = 20 m^2

since ,

we have given the area of square tile

= 1 / 2 m^2 = 0.5 m^2

then,

Find the required number of tiles :
-----------------------------------

required number of tiles






= area of room / area of square tile






= 20 m^2 / 0.5 m^2 = 40 tiles






Answer : number of tiles required to cover the floor of the room = 40 tiles