Question

a floor measuring 2m by 1.5m is to be covered with tiles measuring 25cm square how many tiles will be needed? answer is 48

Answer 1

2m =200cm
1.5m = 150cm
area of floor=length*breath
=200* 150 cm ^ 2
= 30000 cm ^ 2.

area of tiles =side ^ 2
= (25cm) ^ 2
= 625 cm ^ 2


number of tiles =area of floor/area of one tile
= 30000cm ^ 2/ 625 cm ^ 2
=48

Answer 2

2m =200cm

1.5m = 150cm

area of floor=length*breath

=200* 150 cm ^ 2

= 30000 cm ^ 2.

area of tiles =side ^ 2

= (25cm) ^ 2

= 625 cm ^ 2

number of tiles =area of floor/area of one tile

= 30000cm ^ 2/ 625 cm ^ 2

=48