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It depends upon the size of the bags, the density of the sand, and the depth of sand. For example, if the density is 100 lbs/cubic foot, the bags are 50 lbs each, and you want a depth of 1 inch, then:

31.25 sq ft X 1 inch X 1/12 ft/inch X 100 lbs/cubic foot / 50 lbs/bag = 5.2 bags

Better get 6 bags to have enough. If the depth of sand, density of sand, or size of bags is different than what I assumed for this example, then plug your numbers into the equation above.

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Q: How many bags of sand for 31.25 sq ft?
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How many bags of sand will they need to fill the sandbox .The sandbox is 6 feet wide and 5 feet long and 1 foot deep. If each bag of sand fills a volume of 3 cubic feet?

Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.


How many bags of 5 cubic ft to cover 95 square ft at 2 inch depth?

Volume required = 95 sq ft * 2 inch = 95 sq ft * 1/6 sq ft = 95/6 cu ft = 15.833... cu ft. So number of bags @5 cu ft reqd = 15.833.../5 = 3.166... bags ie 4 bags.


How many 0.8 cu feet bags of rubber mulch are needed to cover an area of 90 square feet 1 inch thick?

1 ft = 12 in → 1 in = 1/12 ft Volume required to cover is 90 sq ft × 1 in = 90 sq ft × 1/12 ft = 7.5 cu ft → number of bags = 7.5 cu ft ÷ 0.8 cu ft/bag = 9.375 bags → you need to buy 10 bags


How many bags of 8cu feet would it take to cover an area 266 sq feet 2 inches deep?

2 inches is 0.167 feet. 266 ft^2 * 0.167 ft = 44.3 ft^3 44.3 ft^3 / 8 ft^3 = 5.54 bags which ~6 bags By the way ft^3 is cubic feet


How many 50 lb bags of sand will I need for 1.09 cubic yards?

1.09 cu yards is 29.43 cubic feet and sands weighs 100 pounds per cu ft so you need 2943 pounds. Dide by 50 pounds per bag that is 59 bags

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2 cu ft equals how many yards?

I need one and a haft yards of sand. If the bags hold 2 cu feet how many bags do I need


How many bags of sand will they need to fill the sandbox .The sandbox is 6 feet wide and 5 feet long and 1 foot deep. If each bag of sand fills a volume of 3 cubic feet?

Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.Volume of sand required = 6 ft * 5 ft * 1 ft = 30 cubic feet. A bag = 3 cubic feet so number of bags required = 30/3 = 10 bags.


How many sq feet is 25' x 125'?

3125 sq ft.


How many 50 lb sand bags would you need to cover 400 sq ft 1 inch deep?

400 sq ft at 1 inch = 400x1/12 cu ft = 33.33 cu ft sand weighs 100 pounds per cu ft 33.33 X 100 = 3333 pounds at 50 lb per bag, that is 3333/50 = 66.7 bags


How many bags of topsoil for 1 yard?

27 1 cu ft bags or 9 3 cu ft bags.


How many 50kg cement bags in 20 ft container?

560 bags


How many bags of 5 cubic ft to cover 95 square ft at 2 inch depth?

Volume required = 95 sq ft * 2 inch = 95 sq ft * 1/6 sq ft = 95/6 cu ft = 15.833... cu ft. So number of bags @5 cu ft reqd = 15.833.../5 = 3.166... bags ie 4 bags.


How many 20kg bags in a 40 ft container?

2000


How many 0.8 cu feet bags of rubber mulch are needed to cover an area of 90 square feet 1 inch thick?

1 ft = 12 in → 1 in = 1/12 ft Volume required to cover is 90 sq ft × 1 in = 90 sq ft × 1/12 ft = 7.5 cu ft → number of bags = 7.5 cu ft ÷ 0.8 cu ft/bag = 9.375 bags → you need to buy 10 bags


How many 50lbs bags 2.5 yards of sand?

49 bags. The density of loose sand is about 90 lbs/cu. ft. There are 27 cu. ft. in a cu. yard. Therefore 27 * 90 equals a total weight of 2,430 lbs. for a cu. yard of sand. Given 50 lbs. per bag of sand, you divide 2430 by 50 and get 48.6 bags of sand. Round up to 49.


If I need 12 yards of mulch how many bags would I need if bags hold 2 cubit ft?

There are 9 cu ft in a yard x 12 = 108 then divide by 2 = 54 bags


How many bags of blown insulation does it takes for a 1600 sq ft attic?

The answer would depend on the size of the bags.