you would need 23 bags OK
The area of Gravel Island National Wildlife Refuge is 113,311.9798272 square meters.
The answer depends on the depth to which the area is covered and, to some extent, that will depend on the size of the gravel.
2800 feet of gravel
shetakh khatsats (שטח חצץ)
You cannot make a direct conversion. You need to specify how deep you want the gravel to be in your area that needs covering.
Can't answer unless we know the depth of the gravel and width of the area.
A "yard of gravel" is a measure of volume, not a measure of area. There are 27 cubic feet (3x3x3 feet) in a yard of gravel, or one cubic yard.
At 12" depth, 20 tons of gravel will cover 360 sq ft.
a 50 pound bag of gravel will cover approximately 2 to 3 square feet of area to a thickness of 3 to 4 inches.
A load of gravel will vary in cost by area and company. Gravel is sold by the ton. Each different type of gravel is a different price. The price varies from $15 a ton to over $100 a ton. Delivery charges are also added if the gravel is delivered.
it depends how thickly you lay it.
You will need about 65.185 cubic yards (83.6 tons) of gravel for this area.