It depends on the orientation of the blocks.
60 blocks make a metre square
20
Depends entirely on the size of the individual blocks !
4
1 block is a meter or 1 cubic meter
1 block is 1 meter, so 50 blocks.
It depends on the size of the concrete blocks
1km is 1000 blocks. 1 block is 1 meter. 1 block is exactly 1x1x1.
There are 10 blocks in a square meter
32
It depends on the orientation of the blocks.
The answer will depend on the size of the blocks.
blocks of what size
20
Depends entirely on the size of the individual blocks !
0.1 meters is one tenth of a metre so he would need ten blocks to make a row one meter long.