If a cube of side 20 cm is divided into smaller cubes of side 4 cm, then what is the total number of smaller cubes?

Correct option is B

Given:
Side of the large cube = 20 cm, Side of the smaller cube = 4 cm

Formula Used:
The number of smaller cubes = $$(Side of large cube / Side of small cube)^3$$​​

Solution:
Number of smaller cubes = $$(20 / 4)^3 = 5^3 = 125$$​​