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(d^2 + 6^2)^(1/2) + (f^2 + 6^2)^(1/2) = 20; d*f = 36; (d+6)^2 + (f+6)^2 = 400
(d^2 + 6^2)^(1/2) + (f^2 + 6^2)^(1/2) = 20; d*f = 36; (d+6)^2 + (f+6)^2 = 400
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