Question

The floor of a room with dimensions 5m and 3m is to be covered with square tiles . If each square tiles is of side 25cm.find the number of tiles required

Answer 1

Sides of the floor = 5m and 3 cm ( length and breadth)

                             = 500cm and 300cm            [ 1m = 100cm]

Area of the floor = lb

                           = 500 × 300 = 150000cm².

Square tile : Side = 25cm

   ∴ Area of a tile= 25 × 25

                            = 625cm².

∴No. of tiles required = Area of the floor ÷ Area of a tile

                                   = 150000 ÷ 625

                                  =240.

∴ 240 square tiles are required to cover the room.

Answer 2

5m=500cm
so,500/25=20 tiles fit that side
3m=300cm
so,300/25=12 tiles fit that side
the number of tiles required=12*20
=240 tiles
this is the simplest method