I make it 12.2 cubic yards.
54sqare feet
19.55
about 17 yards of concrete (it's sold by the cubic yard)
If it is the same as concrete it will cover 162 square feet. concrete covers 81 square feet by 4" deep
It is impossible to answer the question as asked because square feet is a measure of area and a "yard of concrete" actually refers to a cubic yard of concrete. However, if we make a couple assumptions we can answer the question I THINK you're asking which is, "How many square feet of concrete does one cubic yard of concrete yield if poured to a typical depth of 4 inches?" The inches of depth can be changed to suit the situation, but in any case giving the poured concrete a depth turns it into a volume which makes it easier to compute the area a cubic yard of concrete will cover. To begin, we need to convertt the square footage of concrete (which is an area) to a volume. Let's use 6 inches for the depth: 12" x 12" x 6" = 864in^3 or 864 cubic inches This is the number of cubic inches of concrete in one square foot of concrete poured to a depth of 6 inches. Now we put a cubic yard into the same terms, cubic inches: 36" x 36" x 36" = 46,656 in^3 or 46,656 cubic inches of concrete. Now we simply divide number of cubic inches of concrete in a yard of concrete by the number of cubic inches in a square foot of concrete poured to a depth of 6 inches: 46656 / 864 = 54 square feet. By the way, there are 27 cubic feet in a cubic yard and you may notice that 27 x 2 = 54. That's a result of the depth I chose for the poured concrete--6 inches. A square foot of concrete poured to a depth of 6 inches is equal to one half cubic foot of concrete. 27 / .5 = 54 If you want to figure square foot yield per yard when you pour the slab at 4 inches instead of 6 inches, then simply substitute 4" in the equations for 6". (36" x 36" x 36") / (12" x 12" x 4") = 81 square feet.
There are no feet or inches in any area.9 square meters of area equates to 96 square feet and 126.03 square inches
either convert the feet into inches or the inches into feet
55
A cubic yard is 46,656 cubic inches. Spread to a thicknes of 5 inches, a cubic yard of concrete covers 9332.1 square inches, which is 64.8 square feet.
Assuming you are talking about a cubic yard of concrete then this will cover 81 square feet to a depth of 4 inches. This is how you work it out. A yard is 3 feet. so a square yard (3 feet by 3 feet) is 9 square feet. There are also 12 inches in a foot and 3 feet in a yard, which makes the cubic yard of concrete 36 inches high.Thus imagine you take your cubic yard of concrete and place it down once and saw of 4 inches from the base this will leave square 3 feet by 3 feet square feet of concrete with a depth of 4 inches when you lift the top bit off.So you need to know how many times you can place it down and cut off 4 inches. As the block is 36 inches high and 4 goes into 36 nine times this means you can cut the block into 9, 4 inch thick, 3 foot by 3 foot square slabs, which is the same as 81 square feet.
81 square feet
70 feet! The answer is in the question!