First we need to calculate the area of the floor

Since it is a rectangulal floor, then the area to be covered is L*I= 9*3=27 m ^2

=270,000 cm^2

Now we need to cover the area with (n) numbers of square each with 30 cm side:

Then the area...

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First we need to calculate the area of the floor

Since it is a rectangulal floor, then the area to be covered is L*I= 9*3=27 m ^2

=270,000 cm^2

Now we need to cover the area with (n) numbers of square each with 30 cm side:

Then the area of the square is 30*30=900 cm^2

Then 900*n = 270,000

==> n =300 tiles

Then we need 300 square tiles to cover the area.