Each tile is 16" x 16" = 0.1652 sq metres.
So to cover 36.30 sq metres you would require a minimum of 36.30/0.1652 = 219.8 or 220 tiles.
However, that assumes that the area to be covered is a well-behaved shape and that all offcuts can be used - an unlikely assumption. In real life, therefore, you should allow for approx 10% more.
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Assuming you mean 16x16 inches tiles... 441 tiles would cover the area exactly
297 16x16-inch tiles.
To cover 345 square feet with 16x16 tiles , you need at least 195 tiles (194 and 1/16 exactly). 345 square feet x 144 square inches/sq ft = 49680 square inches 16 x 16 = 256 square inches per tile 49680 / 256 = 194.0625 It could take more because you may have to use large fractional tiles on edges, and some may break.
141
16x16 is 256, so basically 660/256 would be 2.578125. If you cannot buy something in fractions like that, buy 3 of the 16x16's.