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+clear//
+
+//Variables
+
+p = 1.7 * 10**-8 //Resistivity (in ohm-meter)
+l = 2 * 150 //Length (in meter)
+R = 0.722 //Resistance (in ohm)
+
+//Calculation
+
+A = p*l/R //Area of cross section (in metersquare)
+d = (A * 4 / %pi)**0.5 //diameter of wire (in meter)
+
+//Result
+
+printf("\n Diameter of the wire is : %0.0f mm.",d * 10**3)