Resistance of resistor

\(R_1\) and \(R_2\) in the above figure are two resistors made of the same material. Their respective cross sectional areas and lengths are \((3S, L)\) and \((S, 2L).\) If the resistance of \(R_1\) is \(10.0 \ \Omega,\) then what is the resistance of \(R_2?\)

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