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Eight 4 inch cubes are needed to build and 8 inch cube.
A 12 inch by 12 inch tile is 1 ft by 1 ft, which is 1 square foot. So you would need 120 tiles.
125 16-inch tiles.
297 16x16-inch tiles.
7.35 Is what you need
You'll need 200 18-inch tiles.
To cover an area of 1 square foot with 1/2 inch of water, you would need 0.623 gallons of water.
69
Approximately 96 square feet.
Since each 12x12-inch tile is one square foot, you will need 750 of them.
You need to calculate the diameter of the table, then find the square of that. So, assuming the circumference is 48, the diameter is 15.27889. 15.278892 = 233.4444. You'd need approximately 233.45 square inches.
141