3.5 cubic feet, 3 to 1 mix with sand
Twenty-one .75 cubic foot bags equal 16 cubic feet.
1 cubic yard = 27 cubic feet = 54 half-cubic-foot bags
The number of bags of rocks in 12.25 cubic feet will depend on the size and weight of the bags. To determine the number of bags, divide the total volume of rocks (12.25 cubic feet) by the volume of each bag.
To convert cubic feet to cubic yards, divide by 27. If each bag is 2 cubic feet, then 1 cubic yard is equivalent to 13.5 bags of mulch (27 cubic feet ÷ 2 cubic feet per bag). Therefore, 6 cubic yards are equivalent to 81 bags of mulch (6 cubic yards * 13.5 bags per cubic yard).
Nine 3 cubic feet bags equals one cubic yard. There are 27 cubic feet in one cubic yard. 27/3=9
One cubic yard is equivalent to 27 cubic feet. A 60-pound bag of Quikrete typically yields about 0.45 cubic feet of concrete. Therefore, to fill one cubic yard, you would need approximately 60 bags of 60-pound Quikrete bags (27 cubic feet ÷ 0.45 cubic feet per bag = 60 bags).
Quikrete is sold in 60 pound bags, therefore we will need 1.5 bags. Each 60 pound bag produces 0.45 cubic feet, so times 1.5; 90# bag will yield 0.675 cubic feet .
That would depend on the density of the bags of topsoil.
A typical 80-pound bag of concrete mix yields about 0.6 cubic feet of concrete. A 3-yard mixer has a capacity of 81 cubic feet (3 cubic yards). To fill the mixer, you would need approximately 135 bags of 80-pound concrete mix, since 81 cubic feet divided by 0.6 cubic feet per bag equals about 135 bags.
If your talking about 4'x4'x4" thick it will take about 12 bags. Most 60# bags will do .45 cubic feet and that slab would be about 5.3 cubic feet wich equals 11.77 bags.. Mike
Cubic feet needed is the thickness is 4 inches:416Cubic yards:15.3660 pound bags92580 pound bags 694
10 bags. Each 80 lb bag is 0.6 cubic feet, and your hole is 6 cubic feet.
To determine how many 80-pound bags of concrete are needed to fill a 55-gallon drum, first calculate the volume of the drum. A 55-gallon drum holds about 7.4 cubic feet (since 1 gallon is approximately 0.133 cubic feet). An 80-pound bag of concrete typically yields about 0.6 cubic feet. Therefore, you would need approximately 12 to 13 bags of concrete to fill the drum.
A cubic yard is 3x3x3= 27 cubic feet so you would need 27/.5 = 54 bags
To fill a 30-gallon drum with concrete, you would need approximately 12 bags of 80-pound concrete. This is based on the fact that one 80-pound bag of concrete yields about 0.6 cubic feet, and a 30-gallon drum holds about 4 cubic feet. Therefore, dividing 4 cubic feet by 0.6 cubic feet per bag gives you roughly 6.67 bags, but accounting for the weight and settling, it's safer to estimate around 12 bags.
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.
Twenty-one .75 cubic foot bags equal 16 cubic feet.