Yes. A 8 x 8 x16 is more common.
There are 10 concrete block per m2.
A concrete block is 18 inches long and 8 inches high. Therefore, about 6 block for each side = 9 feet 6 inches, with the end block of the next side turned sideways. 4 sides X 6 block is 24 block per course and where I live I would need at least 6 coarses below grade for a total of 144. I would get 10% extra just in case which would make it 158. You would have to add to this for any height above grade.
4.5
To determine how many 8 x 16-inch concrete blocks are needed for a 10-foot wall that is 8 feet high, first convert the dimensions of the wall to inches: 10 feet = 120 inches and 8 feet = 96 inches. The area of the wall is 120 inches x 96 inches = 11,520 square inches. Each block has an area of 8 inches x 16 inches = 128 square inches. Dividing the wall area by the block area gives 11,520 / 128 = 90 blocks needed for the wall.
volume of wall = 10 * 10 *12*12 and volume of blocks = 8 * 16 no.of block =14400/128=112.5 112 blocks
1.85 yards (.5 x 10 x 10 ) divided by 27 where .5= the 6 inches converted to feet and 27 is the conversion to cubic yards. Concrete volume is measured in yards, which actually refers to a cubic yard (1 yd x 1 yd x 1 yd).
It weighs 59 lbs. There is a difference between a "real" cinder block and a concrete block. A cinder block uses cinders--ash from the burning of coal--as its aggregate. Concrete blocks are made from concrete. Concrete block is far stronger than is cinder block, and some jurisdictions prohibit the use of cinder block. The only justification for cinder block is that it weighs less than concrete block, which is important if the ground you're building on isn't strong enough to support a heavy structure. This justification has gone away, because now you can buy concrete block made from expanded-shale aggregate that's as light as cinder block and as strong as standard-weight concrete masonry.
If the post is a 6 x 6 you will need about 1/10 of a yardof concrete
10 yards
You'll need 1.23 Cubic Yards.
A minimum of 1.3 cubic yards.
A 10-foot round slab at 4 inches requires 1 cubic yard.