Case1, R=4, Length =L and area =A......... We know that , R = rho L/a........ Therefore, rho L/A.=4..........1. Case 2, R=?, Length = L/2 and area= 2A.... Therefore, rho L/4A =?.. ie, 1/4 * rho L / A = ? We know that rho L/A=4 Therefore, 1/4 * 4 =1

1Thank You

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