geometry
posted by MARY .
Two sides of a triangle measure 2x – 4 and 7x – 2 units, respectively. Which of these is a possible length for the third side of the triangle?

You don't list any "which of these ..."
However, the sum of any two sides must be greater than 3rd side ,
so ..
2x4 + 7x2
= 9x  6
So whichever is less than 9x6 could be a
third side 
describe how you would find the total area of the lateral faces of a cube?

tell me the answer
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