Help plz

4

Step-by-step explanation:

so you basically make the + sign into a - sign as when there is a + and - sign next to each other it will always change into a - sign so once you do that it will look like this

11+(-7)

11-7

4

look a the sides they are perpendicular

answer:

your answer is: c. 196 7/8 in^3.