Find the length and width to the nearest cm so that the


The volume of an open-top rectangular box is 420 cubic cm. The length of the rectangular base of the box is four times the width. Find the length and width to the nearest cm so that the surface area is as small as possible. Also find the height and minimum surface area.

  • Width=
  • Length=
  • Height=
  • Surface Area=

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Mathematics: Find the length and width to the nearest cm so that the
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