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2015-09-03T02:03:20+08:00

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Let x = side of a cube                      Volume = 729 cm³

Volume = (x) (x) (x)     or  V = x³
 729 = x³

∛729 = ∛x
∛729 = x
      9 = x       Side a cube is 9 cm

To find surface area of a cube:
      Surface Area = 6x²
      Surface area = 6 (9)²
                              = 6 (81)
                               =  486 cm³
                              




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