DEPRECATED Area, volume, and surface area

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Michael made each of his 10 friends a pair of earrings. To wrap the pairs individually, he creates a simple cardboard gift box to fold into a pyramid. The base is a square with side lengths 6, space, c, m. The sides are 4 equilateral triangles with side lengths 6, space, c, m and height h. The height h is approximately 5, start fraction, 1, divided by, 5, end fraction, space, c, m.
In square centimeters, what is the minimum amount of cardboard Michael needs to create 10 gift boxes to wrap each pair of earrings individually? (Assume there is no wasted cardboard.)
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
c, m, start superscript, 2, end superscript