Volume of the pyramid:

Perimeter of the cross-section:


Area of the cross-section:


First derivative test:

Then the height of the cross-section/pyramid is

The volume of the pyramid that maximizes the cross-sectional area
is

Number 6 is C, Number 7 is A. Do you need number 8? if so I will edit answer and add pic


____________________________________





The two cases are :
or
- a -4 = 0, that leads to a = 4
We can conclude :

Answered by : ❝ AǫᴜᴀWɪᴢ ❞
Answer:
because you have to work, and i'm doing edinuity
Step-by-step explanation: