From a metal sheet of area 192 sq. cm, a...

From a metal sheet of area 192 sq. cm, a box with square base and open top is made. For maximum volume of box its dimensions are

8 cm, 4 cm, 4 cm

8 cm, 6 cm, 4 cm

6 cm, 6 cm, 8 cm

8 cm, 8 cm, 4 cm

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