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+////
+//Variable Declaration
+eta = 0.891 //Viscosity of hemoglobin in water, cP
+T = 298.0 //Temperature, K
+k = 1.3806488e-23 //Boltzmanconstant,J K^-1
+R = 8.314 //Molar Gas constant, mol^-1 K^-1
+D = 6.9e-11 //Diffusion coefficient, m2/s
+
+//Calculations
+r = k*T/(6*%pi*eta*1e-3*D)
+
+//Results
+printf("\n Radius of protein is %4.3f nm",r/1e-9)
+