concrete is sold in cubic yards in the united states.
I hope you are using a 1/4 inch diameter reinforce mesh.
1680 / 81 = 20.74 cubic yards without subtracting the mesh volume.
4.938 cubic yards.
It depends on how thick you want the concrete.
Please clarify what linear measure you want to calculate: for example its length, width, diagonal, perimeter, etc.
It depends upon how thick you want the concrete. For example, if you want the concrete to be 6 inches thick, then you will need 200 cubic feet. There are 27 cubic feet per cubic yard; so divide the 200 cubic feet by 27 to get 7.4 cubic yards.
81
2.15
996 square feet X 1/3 foot = 332 cubic feet.332 cft / 27 = 12.3 cubic yards
14.81 yds
4.938 cubic yards.
How thick? Gotta have thickness to calculate cubic yards.
625 times 0.5 = 312.5 cubic feet will be needed
you can do the math: LXWXD DIVIDED BY 27
how many cubic feet in a yard of concret
It depends on how thick you want the concrete.
27 square feet at 1 f thick
That depends on the length and width of your construction.
A 9x9 foot slab 4 inches thick requires a minimum of 1 cubic yard. If you go to 6 inches thick you will need 1.5 cubic yards.