Question 961597
Not enough.  Do you understand why?


x and y rectangle dimensions.

diagonal of these x and y is 5 feet.
{{{x^2+y^2=5^2}}}


Two unknown variables and just one equation.  
Perimeter is yet one more unknown variable, depending on the values of x and y both of which are unknown.  Perimeter would be {{{2x+2y}}}.