Question 23122
The longest side of a triangle must be LESS than the sum of the other two sides.  

There are two possible problems here.  


First, if the two smaller sides of the triangle are 16 and 28, then the third side must be LESS than the sum of 16 + 28 or 44.  All of the choices given are smaller than 44, and therefore acceptable possibilities.


Second, if the two smaller sides are 16 and the unknown side (call it x), then the third side 28 must be less than the sum of 16 + x.  That is,
28 <16 + x
28-16 < 16-16+x
12<x


This means that x>12, so the unknown side CANNOT be 12 A.


R^2 at SCC