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if i have a 90 length and a 40 width inch of a house and i want to add tiles so i get a 16 inch by 16 inch tile for a "perfect square" how may tiles will i need

  • math -

    If you tile a 5x2 section, you cover 80x32 inches.

    That leaves an 8x90 strip across the top, which uses up another 3 tiles

    That leaves a 10x32 strip on the left, which uses 2 more tiles

    Total: 15 tiles

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