Question 151261
The geometric figure you have given is a rectangular parallelipied or a rectangular prism.

Given that a rectangular prism is <font color="green">x</font> units wide, <font color="green">y</font> units long and <font color="green">z</font> units high, then the volume of the prism is <font color="green">V=x*y*z</font>


Back to your problem,
GIVEN: a 6x8x12 prism.

SOLUTION:

volume=(6*8*12)(ft<sup>3</sup>)
      =(48*12)(ft<sup>3</sup>)
      =576 ft<sup>3</sup>


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