QA. <span>Assuming the dimensions have to be in exact feet then you could have </span> <span>9ft *9ft = 81square feet </span> <span>10 ft * 10 ft = 100 square feet </span> <span>11 ft * 11 ft = 121 square feet. </span>
<span>QB. </span> <span>If each tile is 1 ft * 1 ft ie 1 square foot </span> <span>Then </span> <span>9' * 9' would mean 125 - 81 = 44 tiles would not be used </span> <span>10' * 10' = 125 - 100 = 25 tiles not used </span> <span>11' * 11' = 125 - 121 = 4 tiles not used </span>