Final answer:
The perimeter of the rhombus is 48 cm.
Step-by-step explanation:
A rhombus is a type of quadrilateral with all sides of equal length. The perimeter of a rhombus can be found by multiplying the length of one side by 4. In this case, since the side length of the rhombus is 12 cm, we can calculate the perimeter by multiplying 12 by 4:
Perimeter = 12 cm x 4 = 48 cm
Therefore, the perimeter of the rhombus with a side length of 12 cm is 48 cm.