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September 2, 2014

September 2, 2014

Posted by **Swati** on Sunday, February 19, 2012 at 12:20am.

- math -
**Reiny**, Sunday, February 19, 2012 at 8:43amlet each side be x units

surface area = 6x^2

new edge = 1.1x

new surface area = 6(1.1x)^2 = 7.26x^2

increase = 1.26x^2

percentage increase = 1.26x^2/(6x^2) = 1.26/6 = .21

= 21%

we could have just looked at one of the 6 faces for the same result.

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