How many 13x13 inch tiles do you need to cover 32sq ft?

Answer 1

32 sq ft = 32*12*12 = 4608 sq inches.

So number of tiles required = 4608/(13*13) = 4608/169 = 27.27

So a minimum of 28 tiles would be required. But that assumes that all the off-cuts are utilised - NOT a reasonable assumption.