Final answer:
The volume of the box is 9,000 cm³, which is option (d).
Step-by-step explanation:
The volume of a rectangular box can be calculated by multiplying its length, width, and height. In this case, the box has a height of 15cm, a width of 30cm, and a depth of 20cm. To find the volume, you multiply these dimensions together:
Volume = height × width × depth
Volume = 15cm × 30cm × 20cm = 9,000 cm³
Therefore, the volume of the box is 9,000 cm³, which is option (d).