If it is the same as concrete it will cover 162 square feet. concrete covers 81 square feet by 4" deep
This depends on how much rock you will use per square yard. Suppose you intend to use 1/100 tons (=20 lb) per square yard. Then if you have one ton of rock, it will cover 100 square yards. Similarly, if you intended to use 1/50 tons per square yard, 1 ton will cover 50 square yards. In general you want to use factor labeling: If you are using x tons per square yard, then write this as (1 square yard) / (x tons of rock) = (1/x)*(square yards/tons of rock) This is called a conversion factor. Now, if you have some quantity of rock, say y tons of rock, and you want to see how many square yards it would cover you just multiply (y tons of rock)*(1/x)*(square yards/tons of rock) = y/x (square yards*tons of rock/tons of rock) = y/x square yards since the labels just divide out.
Ignoring air resistance, that would be about 145 feet.
Volume = (84) x (1/6) = 14 cubic feet = 0.52 cubic yard
One ton of river rock will comprise a volume of rock. How much area that covers depends on what depth it is covered to.
It depends on what kind of rock it is.
it covers 1/3 of a mile
1 cubic yard of crushed rock fills 3/depth in feet square yards.
250
You need to know the dimensions and the mass of each piece.
If depends on what kind of rock it is. Each rock has a different weight due to size and density.
If it is the same as concrete it will cover 162 square feet. concrete covers 81 square feet by 4" deep
Not sure what 2b is but crushed concrete with 1 1/2" rock will cover about 60 square feet. 15 tons ends up being around 12 cubic yards.
One cubic yard of rock will cover an area of 81 square feet at a depth of 6 inches.
The question as stated makes no sense, as square feet is a measure of area and "yard", is a measurement of volume. Normally, "yard" is a measurement of length. However, concrete, soil, gravel, sand, etc., are normally sold (in the U.S.) by the "yard" which is simply short for "cubic yard." However, you may easily calculate the area that a yard of crushed rock will cover, depending on the desired depth of crushed rock. As a cubic yard is 3 feet by 3 feet by 3 feet, which is equivalent to 9 square feet by 36 inches, simply divide 36 inches by the desired depth in inches, and multiply it by 9 square feet. Thus, if you wanted a depth of 8 inches, 36 divided by 8 is 4.5. So, you can cover 4.5 square yards, or 4.5 times 9 square feet = 40.5 square feet, which would be a square area approximately 6 feet 4 inches by 6 feet 4 inches.
It depends on what size/kind of rock you want to use. Let's start with what I'll assume is the largest rock one would use in a rock garden - 3 to 5 in. River Rock: 1 Ton will cover about 80 sq. ft. if you want to make sure there are no "holes" 1 to 3 in. River Rock: 1 Ton will cover about 100 sq. ft. (no holes) 3/4 in. Rock: 1 Ton will cover about 150 sq. feet at 1.5" deep... & 120 sq. ft. at 2" deep 3/8 in. Rock - or crusher finds cover about the same as 3/4 in. Rock, but when using smaller rock, I like to cover at least 2" deep because there's more of a tendency for smaller rock to move around & settle, and you want to make sure you aren't looking at the weed barrier in half a year.
4.4 bags for each 1-foot deep. 2.2 bags for each 6-inches deep. Each 5-ft3 bag will cover the area to 2.72 inches deep.