Answers

2015-04-30T12:21:56+05:30
No side can be 4, because the triangle (1,3,4) would be degenerate. 

So the sides are 3,2,3 ... that's the ONLY possibility!

The altitude is 

sqrt(9-1) = 2.828 roughly,
 
so k = 1*2.828 roughly.
1 5 1