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josleemarecharl
14.07.2019 •
Mathematics
Arectangular box has a square base. if the sum of the height and the perimeter of the square base is 12 in, what is the maximum possible volume?
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Ответ:
Let the square base has length
and the height of the box be
. It is given that ![4b+h=12\\ h=4(3-b)](/tpl/images/0088/4940/ed431.png)
The volume of the box is
.
For maximum volume![\frac{dV}{db} =0\\ \frac{d(4b^2(3-b))}{db} =0\\ 6b-3b^2=0\\ b=2](/tpl/images/0088/4940/d6c62.png)
The maximum possible volume occurs when
.
Ответ:
to answer