please answer accurately and not a short answer if you don't know then don't answer thank u, and if u want to spam my answer then I will report u thank u.

Answer:
420cm^3 (cubed) = volume when tripled
Step-by-step explanation:
1. when you multiply 7*4*5=140 (volume of the prism originally)
2. 140*3=420 (final answer)
Answer:
A. 140 cm
B. 3780 cm
Step-by-step explanation:
The volume formula for a rectangular prism is lwh, and 7 times 4 times 5 equals 140.
If you triple all those amounts, then you get 21 (7 times 3), 12 (4 times 3), and 15 (5 times 3), and when you multiply those you get 3780.
I hope this helps :)