Answer:
30 inches
Explanation:
since the shape is a cube we can use cube roots to find the length of the height of the cube
so cube root of 125=5
height of one box= 5
it can be proved by doing 5 raised to 3
and then because there are 6 layers
the height will become
6*5 = 30 inches
so height of 6 layers = 30 inches