It depends on the units for 9 and 22 which are not given.
1 square yard = 9 square feet
depends how deep
It really depends how long the driveway is and what company u get it done by
Square foot doesn't tell you, you need to know cubic footage and then figure how many cubic yards that makes. Cement is sold by the cubic yard.
It depends on the thickness of slab. A yard of cement contains 9 cubic feet. Thus, it would cover 9 square feet if the slab was 1 foot thick. For a 4 inch thick slab, it would cover 3 times as much area, or 27 square feet.
one yard of cement will make a 8 x 10 square foot slab at 4 inches thick, that's 80 sq. feet per yard of cement at 4 inches thick.
Premixed concrete and cement is usually ordered in quantities referred to as yards. A yard is basically a cubic yard of volume, a three dimensional square box that is 3' x 3' x 3', or 27 square feet. If an area to be poured requires the coverage of 27 square feet with a thickness of 4", then the amount of concrete required would be 1/3 yard.
One square yard is 0.000000836127392 square km.
One square yard is just that. One yard wide by one yard long. It is one square yard.
1 square yard = 8,361.27 square centimeters.
There are about .836 square meters in a square yard.
There are 9 square feet in a square yard.