Here it is given that the width is x ft and total length of the fence is 2400 ft .
Let the length be y ft
So we have

Let A represents area, and area is the product of length and width .
So we get

Substituting the value of y, we will get

Second part
The area is maximum at the vertex, and vertex is

And

And that's the required dimensions .
Step-by-step explanation: It should be the second answer.
4πr2
= 4×π×42
= 64π
= 201.06192982975 inches2
The answer should be the last one
Write and solve an equation of ratios:
oil 8 x
---- = ---- = -----------
vin 5 7 liters
Then 5x = 56, and x = 56/5 liters (of vinegar)
Answer:
Please take a picture and ask it again, it had failed to access it.