EXPLANATION
Given the rectangle, if the volume is equal to 576 in^3, then if we change the height to 6 inches, the scale factor would be:
Scale factor = Image / Preimage = 6/12 = 1/2 = 0.5
Hence, the Volume will be the product between the 576 and the scale factor.
Answer:
The volume would be 1/2 of the original volume.