Question

the right triangular prism is made of 8 cubes each one has a side length of 1/2 inche whats the volume of this prism

Answer 1

The volume of one cube is
   (1/2 in)³ = 1/8 in³

8 such cubes will have a volume of
   8*(1/8) in³ = 1 in³

The volume of the prism is 1 in³.


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This one is another question that goes into the "impossible geometry" file. A triangular prism cannot be constructed using cubes.

Answer 2

Check the attachment.
Hope it helps you !