Area to be covered = 25 sq ft = 25*12*12 sq inches = 2600 sq inches.
So minimum number of tiles required = 3600/(16*16) = 14.06 is 15 tiles.
However, that assumes that there is almost no wastage - a very unlikely assumption.
297 16x16-inch tiles.
90 tiles.
16x16 square feet = 256 square feet, so two tiles will suffice.
Assuming you mean 16x16 inches tiles... 441 tiles would cover the area exactly
.375
125 16-inch tiles.
141
56 16x16" tiles are needed.
150 16x16" tiles; you'll have a small part of one tile left over.
Two tiles of 16 ft*16 ft will cover 512 square feet.
64 nos tiles is required calculation is
675 of them. Get extra for breakage.