13
26 bags
Twenty-one .75 cubic foot bags equal 16 cubic feet.
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).
13.5 bags are required.
0.5 is one-half, it takes 2 of these to make one cubic foot.
It would depend on how big the bag of cement is. 1 foot bags will be more in the cubic meter than 2 feet.
Forty five 80 pound bags of cement are needed to make one cubic yard of concrete.
Another incomplete question. It depends entirely on the density of either the contents of the bags, or of the bags the bags themselves if the bags are empty. If the bags contain water, then as there are 1000kg of water in 1 cubic metre there would be 20 X 50kg 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 determine how many bags of mulch you need for 20 cubic yards, first check the bag size; a common bag size is 2 cubic feet. There are 27 cubic feet in one cubic yard, so 20 cubic yards equals 540 cubic feet. Dividing 540 cubic feet by 2 cubic feet per bag means you'll need approximately 270 bags of mulch.
To determine how many bags of 80 lb concrete make a cubic yard, you need to know that one cubic yard is equivalent to 27 cubic feet. An 80 lb bag of concrete typically covers about 0.6 cubic feet. Therefore, to fill one cubic yard, you would need approximately 45 bags of 80 lb concrete (27 cubic feet ÷ 0.6 cubic feet per bag ≈ 45).
26 bags (40kgs cement bag)