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diff --git a/629/CH11/EX11.5/ex11_5.txt b/629/CH11/EX11.5/ex11_5.txt
new file mode 100644
index 000000000..0b8b76cb8
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+++ b/629/CH11/EX11.5/ex11_5.txt
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+ 
+The ratio of drag forces for streamlined shape to cylinder shape = 0.17.
+\ No newline at end of file
diff --git a/629/CH11/EX11.5/example11_5.sce b/629/CH11/EX11.5/example11_5.sce
new file mode 100644
index 000000000..bf12077b9
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+++ b/629/CH11/EX11.5/example11_5.sce
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+clear
+clc
+//Example 11.5 COMPARING DRAG ON BLUFF AND STREAMLINED SHAPES
+Re=7*10^5; //Reynolds number
+Cdc=0.2; //Cd for cylinder, from Ex.11.1
+//Interpolating Re for streamlined shape
+Cds=0.034;
+//Drag force ratio, from Eq.11.4
+Dfr=Cds/Cdc //(Fds/Fdc)
+printf("\nThe ratio of drag forces for streamlined shape to cylinder shape = %.2f.\n",Dfr)
+\ No newline at end of file