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OpenStudy (anonymous):
A box with square base and open top is to be constructed from a square sheet of cardboard by cutting out a square from each of the four corners and bending up the sides. The cardboard piece has an area of 81 cm2. What is the largest possible volume of the box?
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OpenStudy (anonymous):
have the answer but can not get
OpenStudy (anonymous):
Refer to the attachment.
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