Answer:
x=2 y=5
Step-by-step explanation:
is this right
Answer:
153.94 mm^2
Step-by-step explanation:
area of base = area of a circle = Pi * radius squared
radius squared = 49
area of base = Pi * 49
area of base = 153.94
Answer:
Attached is the complete working. Hope it helps.
I’d like to say it’s Line CD considering it goes through the figure f and it shows full length
Answer:

Step-by-step explanation:
Let's define some notation first :
w= width , l = length , A= Area, P perimeter
For this case we want to maximize the Area given by this function:
A= l w (1)
With the following restriction P=500 ft
We know that the perimeter on this case is given by:

Since they are using the creek as one side.
So then we have this:
(2)
Now we can solve w in terms of l from eqaution (2) and we got:
(3)
And we can replace this condition into equation (1) like this:

And we can maximize this function derivating respect to l and we got:

And then we got that 
And if we solve for w from equation (3) we got:
And then the dimensions would be:

And the area would be:
