The set of all solutions of the system
{x+y≤32x+y≥2x≥0y≥0
is a quadrilateral region. Find the number of units in the length of the longest side. Express your answer in simplest radical form.
√ [ (3 - 0)^2 + (3 - 0)^2 ] = √ [9 + 9 ] = √18 = 3√2 units
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