A = (14)(18) + 1/2(18)(13)
A = 252 + 117
A = 369
answer
369 m^2
The maximum area of the pen is the highest area the pen can have
The maximum area is 16200 square yards
Let the dimension be x and y.
So, the perimeter is given as:

Because it has one additional fence, the perimeter is calculated as:

Make y the subject

The area is calculated as:

Substitute 

Expand

Differentiate

Set to 0

Rewrite as:

Divide both sides by 4

Substitute 90 for x in 


Hence, the maximum area is 16200 square yards
Read more about maximum areas at:
brainly.com/question/11906003
V^2 = 252
v^2 - 252 = 0
(v - sqrt252)(v + sqrt252) = 0
so the 2 solutions are sqrt252 and - sqrt252
= 15.87 and -15.87 to nearest hundredth.
Firstly, foil 3(2x + 1): 
Next, combine like terms: 
Next, subtract 3 on both sides of the equation: 
Lastly, divide both sides by 4 and <u>your answer will be
</u>