Question

How many tiles 30 x 40cm will be needed to cover a floor with dimension 6cm x 0.42cm

Answer 1

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Number of tiles required to cover the floor = 30 × 40 / 6 × 0.42 = 10000/21 approx.

Answer 2

Dimensions of the room = 30cm*40cm

Area of the room = length*breadth = 30*40 = 1200 cm²

Dimensions of a single tile = 6cm*0.42cm

Area of a single tile = 2.52 cm²

Total number of tiles = 1200/2.52

                                   = 476.19

                                  = 476 tiles (approx.)

Thus, 476 tiles are needed to cover the floor.