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emberferran
13.07.2019 •
Mathematics
The length and width of a rectangle must add up to 78 feet. calculate the dimensions that will yield the maximum area (remember, area = length times width). what is the length that results in the maximum area?
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Ответ:
The length that results in the maximum area is 39 feet.
Explanation
Lets assume, length of the rectangle is
feet and width of the rectangle is
feet.
As the length and width must add up to 78 feet, so the equation will be...
Solving equation (1) for y :![y= 78-x](/tpl/images/0083/2440/862b9.png)
Now the area of the rectangle,
Now taking derivative of equation(2) with respect to
......
If
, then
If
, then ![y= 78-x = 78-39=39](/tpl/images/0083/2440/fcb41.png)
So, both length and width will be 39 feet for getting maximum area.
The length that results in the maximum area is 39 feet.
Ответ:
can't understand question
Step-by-step explanation: