Answer:
B. 72
Step-by-step explanation:
To solve this, we need to find the volume of the rectangular prism.
[tex]formula=length*width*height[/tex]
This rectangular prism has a length of 3, a width of 6, and a height of 4[tex]3*6*4=72.[/tex]
Therefore, there were 72 blocks needed to make this rectangular prism.
