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Thalf1= 2.5*(10^5); //half-life of U-234, y
AtomicRatio= 1.8*(10^4); //atomic ratio of u-238 and U-234 in the sample
Thalf2= AtomicRatio*Thalf1; //using Eqn12.9
disp(Thalf2,"The half-life of Uranium-238, in years, is: ")
 
//Result
// The half-life of Uranium-238, in years, is:    
//    4.500D+09