about 5 yards if your slab is 4" deep

how many yards of concrete will i need to do a 20 x20 x4 slab

3.95 cubic yards of cement are needed for a slab that size.

4.074 cubic yards for every foot the slab is thick.

A 40x60x6in slab requires 44.44 cubic yards of cement.

You can't express a volume of concrete in yards.

A 40'x40'x6" slab requires 29.63 cubic yards of cement.

10.67 Cubic Yards

1.85 cubic yards.

1.19 Cubic Yards

3.6 cubic yards will be enough.

A 14'x14'x4" inch slab will require 2.42 cubic yards of cement.

9.3 cubic yards of cement is required for this slab.

About 24 cubic yards of cement is required for a slab that size.

25 Yards of concrete

eight cubic yards

6.67 Cubic Yards

You will need 27.6 cubic yards of cement.

0.79 Cubic Yards

3.95 Cubic Yards

17.3 cubic yards will do it.

15 cubic yards

3.56 Cubic Yards

2.96 Cubic Yards

8 square yards

Assuming you need a slab 25 feet x 32 feet x 4" you would need 10 yards of concrete. 25 x 32 x .33 / 27 = 9.7 cubic yards

1.5 cubic yards of cement are needed for an 11' x 11' x 4" slab.

Approx 21 cu yds.

10.67 cubic yards. Adjusting for safety, you should order a minimum of 11.5 cubic yards.

Volume = 11.85 Cubic Yards.

If the slab is the standard 4" deep, you will need at least 8.89 cubic yards.

4.938 cubic yards.

For a 4-inch depth you will need 7.41 cubic yards.

11.852 cubic yards

You will need a minimum of 39.51 Cubic Yards.

You'll need 1.23 Cubic Yards.

For a 16' x 24' slab with a depth of 4", you would need a minimum of 4.74 cubic yards.

14.8 cubic yards will work but round to 15 to be sure.

For a 4-inch thick slab, you will need at least 9.48 Cubic Yards.

You will need a minimum of 2.96 cubic yards.

About 2.11 Cubic Yards.

At least 3 cubic yards for a 4-inch slab. You'll need 4.75 cubic yards for a 6-inch slab.

Assuming you pour to a depth of 4 inches, you will need 30.86 cubic yards.

1.25 cubic yards for a 4-inch slab. 2 cubic yards (1.85) for a 6-inch slab.

How many square yards in a 20x18 feet 3 inches thick

Assuming you use a standard 4-inch depth, you'll need 14.81 cubic yards.

Approximately 12.35 Cubic Yards.

You need to supply the thickness of the slab in order to calculate this. If it was a 6" inch thick slab (0.5 feet), then the formula would be 2 x 76 x 0.5, all divided by 27 = 2.81 cubic yards.

call a concrete company and ask how much concrete will I need to pour a slab 12' X 12' X 6". they will tell you how much and a price.

1.78 cu. yds.

You need to specify the slab's width and the length as well.