6.666666666666666666666666666666666666666666666666 yards.
30 ft
20 yards
300 feet=100 yards
You cannot convert sq ft into yards, you must convert sq ft into sq yards. There are 9 sq feet in 1 sq yard so there are 283.33 sq yards in 2550 sq ft.
3" inch depth covers 108 sq ft so 450 sq ft and 3" depth = 4.5 yard aprx
2 yards
I think you mean 6 inches thick, not 6 feet thick. You would need 200 cubic feet, or 7.4 cubic yards.
150 ft
23 yards
Based on sand and gravel calculator found on L.R. Faulk Construction Co. site, 1 ton of gravel (clean rock) will equal approximately 7.3 sq. ft x 6 inches deep, or 5.2 sq. ft x 3 inches deep. A ton of gravel will cover approximately 15 square yards (135 square feet) at 3 inches deep.
1500 sq ft = 1500/9 ie 166 2/3 sq yds
At 12" depth, 20 tons of gravel will cover 360 sq ft.
4 1/3 squared is .. about 19 square yards
13 X 16 divided by 9 = 23.11 square yards
1 cubic yard = 27 cubic feet4 inches = 1/3 ftVolume = 82,272 x 1/3 = 27,424 cubic feet = 1,015.704cubic yards (rounded)That sounds like a lot of gravel, but every (9-ft x 9-ft) square needs a cubic yard,and you're covering almost 1.9 acres.
6 sq. yds