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+///Chapter No 7 Fluid Mechanics
+///Example 7.12 Page No 122
+/// Find Intensity of pressure of water
+///Input data
+clc;
+clear;
+Z1=1.5;                   //open tank contain water in m
+Z2=2.5;                   //oil of specific gravity for depth in m
+S=0.9;                    //oil of specific gravity 
+rho1=1000;                //density of water in Kg/m**3
+rho2=S*10^3;             //density of oil in Kg/m**3
+g=9.81;                   //gravity
+
+
+
+///calculation
+P=rho1*g*Z1+rho2*g*Z2;    //Intensity of pressure in kPa
+
+
+///output
+printf('intensity of pressure=%f N/m^2 \n',P);