18 bags (80 pounds) of quikrete for a 4 inch thick slab.
U need 1.63 80lb bags per square ft so 131bags to do 8ft by 8ft
Not enough information. 8x8 what?
8x8 feet = 64 square feet = 9,216 square inches.
Your patio is (8x8)/6in = 10.66 cubic foot. The sand comes in 50 lb bags that cover 0.5 cubic foot so you will need 21.33 bags (round up to 22 or down to 21)
64
8x8 = 64 squares.
64
64
64!
9x7 and 7x9 are the same and equals to 63 whereas 8x8 equals to 64 so therefore 8x8 is greater than both 9x7 and 7x9.
8X8=64
945