Answer:
3,000,000 in3
Explanation:
The volume of each slab is 25x20=500. 500x30=15,000. per slab is an increased volume of 15,000.
Stacking 15,000 over 15,000 over and over again results in the volume of 200 be equal to 200(15,000). Take power away from the numbers and you have 2x15x100,000. Its equal to 3,000,000. Thats your answer