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diff --git a/1172/CH8/EX8.6/8_6.txt b/1172/CH8/EX8.6/8_6.txt
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+ # Problem 6 # 
+Standard formula used v_o = sqrt(G*M_e/r) 
+ Standard formula used T = 2 * pi * r / v_o 
+ 
+ Orbital velocity of satellite is 7.727615 km/s 
+  period of revolution is 1.508719 h.
+
diff --git a/1172/CH8/EX8.6/Example8_6.sce b/1172/CH8/EX8.6/Example8_6.sce
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+clc
+//Given that
+h = 3e5 // distance of satellite from surface of Earth in m
+R_e = 6.38e6 // radius of Earth in km
+M_e = 6e24 // mass of Earth in kg
+g = 9.8 // gravitational acceleration in m/s2 
+
+// sample problem 6 page No. 301
+printf("\n\n\n # Problem 6 # \n")
+
+printf("Standard formula used v_o = sqrt(G*M_e/r) \n ")
+printf("Standard formula used T = 2 * pi * r / v_o \n ")
+r = R_e + h// calculation of effective distance between Earth and satellite
+
+G = g * R_e^2 / M_e// calculation of gravitational constant 
+v_o = sqrt(G * M_e / r) / 1000// calculation of orbital velocity of satellite
+T = 2 * %pi * r / (v_o * 1000) / 3.6e3 // calculation of period of revolution of satellite
+
+printf ("\n Orbital velocity of satellite is %f km/s \n  period of revolution is %f h.",v_o, T)