Here, the length of each side of a cube is 4. Since the circular bases are inscribed in two opposite cubes, from my understanding, the height would be 8, adding two cubes’ height and radius = 4/2 = 2.

I luckily got the right answer bc I did not have the option to pick V = 3.14 * 2 *2 *8 , so my next option was to put the height = 4, hence got the right answer.

right answer height = 4