Mathematically, a yard is a measure of length, has only one dimension and thus has no volume which has three dimensions; so no matter how many of them you have you will never get a volume of 15 cu ft.
If you are using "yard" in the slang, builders' way to represent cubic yards, then:
1 yd = 3 ft
1 cu yd = 1 yd x 1 yd x 1 yd
= 3 ft x 3 ft x 3 ft
= 27 cu ft
⇒ 15 cu ft = 15 ÷ 27 cu yd
= 5/9 cu yd
≈ 0.56 cu yd
sq feet to sq yards cu ft to cu yards you need depth added to your sq ft to get cu ft such as 70 sq ft x 4 in deep = 23.33 cu ft =.086 cu yd
2.2222222 cu. yards
It would be helpful to have units of measurement in the equation. However, pouring a slab I'll presume your measurements are feet x feet x inches. The volume of this slab is 55 x 15 x 0.5 (6 inches is 0.5 ft) = 412.5 cubic feet 1 yard of cement (more likely concrete as a cement slab will crumble under load) is equal to 27 cu.ft. So, 412.5 cu.ft. needed / 27 cu. ft. / cu. yd. = 15.2777...cu. yards. you will need to order 15.27777...cu. yards, as a yard isn't sold in this decimal you will need to order 15 1/2 yards of concrete to pour your slab.
2.09 cu yds
Total coverage area 314.16 sq. feet. depth of 2 inches = 1.94 cu yards answer ... around 2 cu yards
797 cu yards = 797 * 33 cu feet = 21519 cu ft.
27 cu feet = 1 cu yard 1260 cu ft = 1260/27 = 46.67 (462/3) cu yards
27 cu. ft. = 1 cu. yd.
sq feet to sq yards cu ft to cu yards you need depth added to your sq ft to get cu ft such as 70 sq ft x 4 in deep = 23.33 cu ft =.086 cu yd
2.2222222 cu. yards
I need one and a haft yards of sand. If the bags hold 2 cu feet how many bags do I need
Volume of pit = 9ft * 30ft * 2ft = 540 cubic ft = 540/27 cu yards = 20 cu yards.
Cubic feet of concrete required = 32 x 3 x 0.25 = 24 cu. ft 1 cu yd = 27 cu ft Answer: 24/27 cu yards = 0.89 cu yards.
14.62 cu yds
26 cubic yards = 702 cubic feet
15745 cu-ft or 583 cu-yd of sand
It would be helpful to have units of measurement in the equation. However, pouring a slab I'll presume your measurements are feet x feet x inches. The volume of this slab is 55 x 15 x 0.5 (6 inches is 0.5 ft) = 412.5 cubic feet 1 yard of cement (more likely concrete as a cement slab will crumble under load) is equal to 27 cu.ft. So, 412.5 cu.ft. needed / 27 cu. ft. / cu. yd. = 15.2777...cu. yards. you will need to order 15.27777...cu. yards, as a yard isn't sold in this decimal you will need to order 15 1/2 yards of concrete to pour your slab.