Answer:
Prism Y




Prism Z





Step-by-step explanation:
Given
See attachment for sculpture
Solving (a) The dimension and volume of Y
From the attachment

18 in is the height of Z and 6in represents the length (height) of the unoccupied space by Y
So:


16 in is the total length of the sculpture and 10 in represents the length of Z
So:


10 in is the width of Z and 6in represents the length (width) of the unoccupied space by Y
So:

Hence, the dimension of Y is:



Volume is then calculated as:



Solving (b) The dimension and volume of Z
As identified in (a), the dimensions of Z are:



Volume is then calculated as:



Solving (c): Total volume of the sculpture.
To do this, we simply add up the volumes of Y and Z.
So, we have:

