Question

The number if square tiles each of width 90cm needed to cover a floor of area 8100m is​

Answer 1

first convert area to CM : one metre =100cm

8100m=810000cm

the area of one square tile :

90*90=8100cm²

the number of times needed are

810000/8100=100tiles

Answer 2

1m = 100cm

1 tile area = 90

90 tiles area = 90×90

Total number of tiles needed = 8100×100/90×90

= 100tiles

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