Answer:The volume of the square pyramid is 48 cubic decimeters.
Step-by-step explanation:
1. Calculate the area of the base of the square pyramid: Area = side length of the base squared = 12 dm * 12 dm = 144 square dm.
2. Use the formula for the volume of a square pyramid: Volume = (1/3) * base area * height = (1/3) * 144 square dm * 12 dm = 48 cubic dm.
