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December 21, 2014

December 21, 2014

Posted by **amanda** on Friday, April 25, 2014 at 9:51am.

- algebra -
**Steve**, Friday, April 25, 2014 at 1:04pmAssuming the box is closed, it has 6 faces, so

2x(x+3) + 2x(1) + 2(x+3)(1) = 130

x^2+5x+3 = 65

x = 5.76

Hmmm. If the box is open, with no top, then

x(x+3) + 2x(1) + 2(x+3)(1) = 130

x^2+7x+6 = 130

x = 8.17

I guess x is not an integer.

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