Posted by **vincent** on Tuesday, July 30, 2013 at 1:08am.

Number of cubic inches in volume of cube, Number of square inches in surface area of cube. which one is greater or equal?

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**Anonymous**, Tuesday, July 30, 2013 at 2:43am
Side length =L, Vol=L^3, SA=6L^2

If L^3=6L^2 then L=6, that is for 6 inch cube, cubic in will be equal to sq inches. If side is L+a, then say

(L+a)^3>6(L+a)^2 or L+a>6 or L>6-a. At a=0 it confirms the first result L=6; for all positive values of a, vol will be>SA, that is cubic inches will be more than sq in.

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