Answer:
Any, that is greater than 5 and less than 17
Step-by-step explanation:
Given three sides of triangle: a, b and c, and a<c and b<c, then the triangle exist only if a+b>c
therefore:
if a = 11 and b = 6 and c = ??
then: 11 + 6 > c
c < 17
if a = 6 and c = 11 and b = ?? {or b=6 and a=??}
then: 6 + b > 11 {subtract 6 from both sides}
b > 5
