Answer: first off i am not a nerd ur just a dummyboi second this is simple math grade 4 really the answer is 24
Explanation:
In a cube that is 3x3, 19 cubes can be seen. 8 are hidden.
In a cube that is 4x4, 37 cubes can be seen. 27 are hidden.
In a cube that is 5x5, 61 cubes can be seen. 64 are hidden.
In a cube that is 6x6, 91 cubes can be seen. 125 are hidden.
19+8=27 if ur making a 3x3 cube answer is 24