The perimeter of the triangle below is a 57 unit. Find the value of y

Question

Geometry 

Answer 1

Perimeter = 57 = sides a+b+c

any side of a triangle cannot be greater than the sum of the other 2 sides

It also cannot be less than the difference of the other 2 sides

a<b+c<57

a>b-c>0

0<a<57

without more information, that's about all that you know

if y is the longest side 19<y<57

but if y is the shortest side then

0<y<57/3

0<y<19

if y is the middle sized size then

57/4 < y < 19

14.25 < 19