12
45
1485
depends on what you mean by 5x5, would that be feet or yards If feet then 3.75 bags If yards then 33.75 A 50lb bag of sand is 0,5 cubic feet
480 barrels
That would depend on the density of the bags of topsoil.
1 50kg bag fill about 2 cubic f. so for 102cu.f. you'll need 51 bags
12
24g
45
10 bags will give you 6'2/3", seven bags will give you 11 bags will give you 7'1/3". Each bag is 2/3 cu feet.
1485
bags of what?
depends on what you mean by 5x5, would that be feet or yards If feet then 3.75 bags If yards then 33.75 A 50lb bag of sand is 0,5 cubic feet
Another 53.75 square feet of tile would be needed.
10 bags. Each 80 lb bag is 0.6 cubic feet, and your hole is 6 cubic feet.
80# bags are 0.6 cubic feet and it takes 41 to make a cubic yard. In that case, 60# bags must be 0.45 cubic feet and it would take 55 to make a cubic yard.