A pyramid has been removed from a rectangular prism, as shown in the figure. The height of the rectangular prism is 8cm, its length and width are 15cm and 9cm respectively. Find the volume of this composite solid.
Please directly answer the question and provide the final value, e.g., 1, 2.5, 300.
Question: A pyramid has been removed from a rectangular prism, as shown in the figure. The height of the rectangular prism is 8cm, its length and width are 15cm and 9cm respectively. Find the volume of this composite solid.
Please first conduct reasoning, and then answer the question and provide the final value, e.g., 1, 2.5, 300, at the end.
Question: A pyramid has been removed from a rectangular prism, as shown in the figure. The height of the rectangular prism is 8cm, its length and width are 15cm and 9cm respectively. Find the volume of this composite solid.