Answer:
C
Explanation:
The volume of the original wall is
V(wall) - V(window)
lwh - lwh
1*6*6 - 1*2*2 = 36 - 4 = 32 cubic feet
The volume of the expanded wall is
V(wall) - V(window)
lwh - lwh
1*12*12 - 1*4*4 = 144 - 16 = 128
Now subtract these two to get the difference in volume once the wall is expanded!
128 - 32 = 92 cubic feet
So the answer is C.
