D because one thousand nine hundred twenty divided by 8 equals two hundred and forty
Answer:

Step-by-step explanation:
Expression for the rectangular area and perimeter are, respectively:


After some algebraic manipulation, area expression can be reduce to an one-variable form:


The first derivative of the previous equation is:

Let the expression be equalized to zero:


The second derivative is:

According to the Second Derivative Test, the critical value found in previous steps is a maximum. Then:

The maximum area is:


Answer:
diameter=14
radius =14/2=7
area =πr²
hope it helps
<h3>stay safe healthy and happy.</h3>
Answer:
(-1,1)
Step-by-step explanation:
<span>2 – (–8) (–3) = -22
Choices given are incorrect.</span>