The number is X
(1/3)x -6=8
No the side’s are different
2048cm^3
Because you've multiplied the lengths by 4, you must multiply the volume by 4^3
When you're multiplying any number times a fraction with a numerator of one, that number becomes the numerator. For example:
a x 1/b = a/b
So, in your case:
12 x 1/5 = 12/5
