"4 inches" is a length. "7676 square feet" is an area. "4 inches by 7676 square feet"
describes a volume, which is equal to 2,558.67 cubic feet. (= 7676/3, because 4 in = 1/3 ft.) So your question is better put as "How many tons of crushed stone does it take to cover an area of 7676 square feet to a depth of 4 inches?"
The answer depends on the density of the crushed stone. I can't answer that, but I've given your question a clearer phrasing.
25 Yards
221.67 (2dp)
36
64 cuft, about 2 and a third cubic yards
1 yard of 1" crushed stone
25 Yards
221.67 (2dp)
36
However much you want. By suitably varying the thickness, you could, in theory cover the surface of the earth or even a larger area.The 'square feet' of area that it covers is 324/(depth in inches)
64 cuft, about 2 and a third cubic yards
A yard equals out to 3 feet, or 36 inches.
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.
Crushed stones are typically referred to as crushed stone or crushed rock. These crushed fragments are commonly used in construction and landscaping for a variety of purposes such as making concrete, paving driveways, and drainage applications.
1 yard of 1" crushed stone
Other names for gravel include crushed stone, rock chips, pebbles, and aggregate.
1 cubic yard covers 27/depth in feet square feet.
To calculate the area of the patio in square inches, we first convert the dimensions to inches (12 ft = 144 in, 14 ft = 168 in). The patio's area is therefore 24,192 square inches. Each 8-inch paving stone covers 64 square inches, so divide the total area by 64 to find that you'll need 378 paving stones to pave the patio.