I'm assuming 21x12 are in inches.
21 x 12 inches = 252 Inches
1 square foot = 144 Inches
650 x 144 = 93 600 Inches Squared
93 600 / 252 =
95.3809524or rounding off 96 tiles. You may have a gap with no tiles on one or two walls or you can fill the gap with a split tile.Hope this helps :)
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12 inches = 1 foot Thus the tiles would be 1 foot square. You therefore need 30 to cover a 30 square foot room.
A 12x12 tile covers 1 square foot (since 12 inches = 1 foot). To cover a 144 square foot area, you would need 144 tiles, as each tile covers 1 square foot. Therefore, you need a total of 144 tiles to completely cover the area.
15 tiles exactly.
If the tiles are 1 x 1 FOOT, then they cover 118 square feet.If the tiles are 1 x 1 INCH, then they cover (118/144) = 0.8194 square foot (rounded)If the tiles are 1 x 1 METER, then they cover (118 x 3.280842) = 1,270.1 square feet (rounded)
64 nos tiles is required calculation is