Question 847965
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Hi,
let s = shorter side
longer side = (s + 150)
 3s = diagonal + (s + 150)  Yes, good work
 2s - 150 = {{{sqrt(s^2 + (s+150)^2)}}}   |Squaring both Sides
4s^2 - 600s + 150^2 = 2s^2 + 300s + 150^2
      2s^2 = 900s
        s = 450ft, shorter side.  The longer side is 600ft
Area is {{{(450ft)(600ft)}}}