25ft * 17ft = 425 sq ft = 61200 sq in
So, number of tiles required = 61200/(20*20) = 153
That is as far as mathematics is concerned. It is assumed that each and every bit of offcut is utilised. An assumption that is neither realistic nor likely to resust in a "neat" finish. It is also assumed that there are no breakages. In real life, get 5-10% more tiles - depending on your skill level and the number of tiles in a box or pack.
210 tiles
20ft long by 11ft wide
16 square tiles
A minimum of 300 square feet.
If the floor tiles are measured in inches and the room is measured in feet then the tiles are 1sq feet and the room is 6x8 = 48 sq feet so you would need 48 tiles.
144 tiles
210 tiles
There are: 25*19 = 475 square feet
If you mean a 35ft by 25ft room then it is 35*25 = 875 square feet
20ft long by 11ft wide
Depends on the size of the tiles.
12 tiles by 18 tiles or 216 tiles total
120 tiles
16 square tiles
154
122
The answer will depend on the size of the tiles!