Answer:
126 in^3
Step-by-step explanation:
15 x 2 + 18 x 2 + 30 x 2 = 126
You Multiple the equation by each number there for you get 126 same with the ^3 when you add it all up together if you understand what I am saying like for example the equation: 15 x 2 + 18 x 2 + 30 x 2 = 126
