st=16
rt=41
s=16/t and r=41/t
So rs=16/t*41/t
rs=656/(t^2)
If this is a triangle then you use the pythagorean Theorem
[tex]a^2+b^2=c^2[/tex]
I am not sure but if rt is the hypotenuse then...
[tex]16^2+b^2=41^2[/tex]
[tex]256+b^2=1681[/tex]
[tex]1425=b^2[/tex]
[tex]b=37[/tex]
