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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.

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13y ago
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Q: How many 20in by 20in tiles to tile a 25ft by 17 ft room?
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