Depends on how thick the slab is, but 4" thick (.33 or 1/3 of a foot thick) would be typical. So multiply 10 x 10 = 100 square feet of area times .33(thickness in feet) equals 33 cubic feet. A 90 lb. bag contains about .66(two thirds) of a cubic foot of concrete, so you would need about 1 1/2 bags per cubic foot or 50 bags for 10'x10'x4"
about 60 60lb bags
27 bags of 30kg bags of concrete bargs
about 60 60lb bags
4.4 Bags
12
9.33 bags. Concrete mix is usually is 60 or 80 lb bags, so check the labels.
about 60 60lb bags
27 bags of 30kg bags of concrete bargs
4.4 bags
Each 60 pounds bag of ready mix concrete will make .45 cubic foot of concrete. There are 27 cubic feet in a cubic yard. You will need 60 bags of 60 pound premixed concrete to make 1 cubic yard.
What size bags of concrete and how big are the bricks? Makes a difference.
about 60 60lb bags
20
4.4 Bags
47
12
About 56