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I'll do #1 just for the "fun" of it.
Let one side=y
Let the other side =x
xy=600
x+y=64
x=64-y
Therefore,
(64-y)y=600
-y2+64y-600=0
throw this into the quadratic equation and you get 11.41 and 52.59. Units were specified in the problem
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Mike
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