Another 53.75 square feet of tile would be needed.
Ok
You would need 8.
1485
540 feet2
The answer will depend on the depth to which the area is covered.
26928 pebbles for the minimum depth.
You would need 48 cubic feet of corn.
I think perhaps 2250 blocks .
It depends on how high you would like to fill it. You see, a liter is a 3-dimensional measure of volume (like a cubic foot is), and a square foot is a 2-dimensional measure of area. So, for example, to fill an area of 10,500 square feet to a height of 1 foot, you would need 297,326.889 liters.
64 cuft, about 2 and a third cubic yards
13.2, you need to buy 14.
18ft³
600x300x7mm tiles fill a 20 feet container?