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diff --git a/629/CH11/EX11.8/ex11_8.txt b/629/CH11/EX11.8/ex11_8.txt
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+++ b/629/CH11/EX11.8/ex11_8.txt
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+ 
+The angle of attack for a take the given take off speed = 7 degrees.
+
+The stall speed is 119 km/h.
+ 
+\ No newline at end of file
diff --git a/629/CH11/EX11.8/example11_8.sce b/629/CH11/EX11.8/example11_8.sce
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index 000000000..1675d17a7
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+clear
+clc
+//Example 11.8 TAKEOFF CHARACTERISTICS OF AN AIRPLANE
+Vo=140000/3600; //velocity [m/s]
+rho=1.2; //density [Kg/m^3]
+b=10; //wing span[m]
+c=1.5; //chord length[m]
+S=b*c //area [m^2]
+FL=11600; //lift force[N]
+CL=FL/(S*rho*Vo^2/2) //lift coefficient
+A=b/c //aspect ratio
+//Interpolating for A from fig.11.23,
+alpha=7; //angle of attack in degrees
+printf("\nThe angle of attack for a take the given take off speed = %.f degrees.\n",alpha)
+//stall occurs at CL=1.18, from fig.11.23
+Cl=1.18;
+Vstall=sqrt(2*FL/(Cl*S*rho))*(3600/1000) //stall speed [Km/hr]
+printf("\nThe stall speed is %.f km/h.\n",Vstall)
+\ No newline at end of file