(a) Volume of any Pyramid =
cubic units
(b) Sarah doesn't have to go through all the hard work as the smaller pyramid has a ratio of 2:3 to the bigger pyramid, so we get the equation, to help us solve it.

Hope that helps!
No its not possible I cant explain right now because I'm in class but I will later
Answer:
The answer to the problem is
y = 134/3
Step-by-step explanation
The answer to your question is 25.33.