I have to guess at a lot, because you did not give enough information. Is this 11 feet x 11 feet x 1 foot? That is what I will assume. Sand has a density of about 2.7.
So: 11 x 11 x 1 x 62.4 x 2.7 /50 = 407.7216 bags so about 408 bags
bags of what?
That would depend on the density of the bags of topsoil.
I don’t know
One pound is 16 ounces, so you can fill 2 8-ounce bags from each pound of mix. With 10 pounds of trail mix, you can fill 20 8-oz bags. Well, 19, since you're probably eating trail mix while you're filling the bags, and you'll have eaten one bag's worth while you worked.
20 bags. 16 oz are in a pound. 10 X 16 = 160 160/8 = 20
One pound is 16 ounces, so you can fill 2 8-ounce bags from each pound of mix. With 10 pounds of trail mix, you can fill 20 8-oz bags. Well, 19, since you're probably eating trail mix while you're filling the bags, and you'll have eaten one bag's worth while you worked.
To determine how many ten-pound bags of ice will fill a 48-quart cooler, we first need to convert quarts to pounds. A quart of ice weighs approximately 2.2 pounds, so a 48-quart cooler can hold about 105.6 pounds of ice (48 quarts x 2.2 pounds/quart). Dividing this by the weight of a ten-pound bag of ice, you would need about 10.56 bags, which means you would need 11 bags to fill the cooler completely.
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.
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).
1 50kg bag fill about 2 cubic f. so for 102cu.f. you'll need 51 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. Each 80 lb bag is 0.6 cubic feet, and your hole is 6 cubic feet.