Question 1104918
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1dm is 10cm, so the dimensions of the block in cm are 18x12x10.<br>
You can get 6 full 3cm cubes along the 18cm length, and you can get 4 full 3cm cubes along the 12cm width.  Along the 10cm thickness you can get 3 3cm cubes; but there will be some material wasted.<br>
The total number of 3cm cubes you can get is then 6*4*3 = 72.