Answer:
Answer 24 cm^3
Explanation:
If the dimensions are 1/2 the volume is 1/8 the original volume. There are 2 ways to do this. I'm going to choose the most straight forward.
Formula
V = L * w * h
Givens
L = 6
w = 8
h = 4
Solution
V_original = 6 * 8 * 4 = 192
V_half = 3 * 4 * 2 = 24
V_original / V_half = 192/24 = 8/1
So the other way around (V_half/V_original) = 1/8