Answer:
13058.83 cubic inches
Step-by-step explanation:
Given that a rectangular box is having dimensions as 41x81 inches.
Let x be the side of square cut from all the four corners.
The open box made would have height as x and length 41-2x with width 81-2x
Volume =

Equate first derivative to 0
We get applicable root as x = 8.642
Max volume = 13058.83 cubic inches
Answer:

Step-by-step explanation:
The answer is C 11 1/4 or 11.25 Cubic inches
So 5 pounds=12.5
divide 12.5 by 5 to get dollars per pound
$2.5 per pouind