Answer:
the missing side length is 
Step-by-step explanation:
we know that the volume of the rectangular prism is equal to

In this problem we have


using a graphing tool find the x-intercepts of the function
see the attached figure
The x-intercepts are

so


therefore
the missing side length is 
Divide the fraction and then subtract the two!
Answer:
eight hundred and seventy-two trillion
It'd be 49/100 because you cant reduce it.