//Example 6 // Area of cross section
clc;
clear;
close;
//given data :
n1BYn2=20;
T=20*9.8;// in N
Y=19.6*10^10;// in N/m^2
alfa=n1BYn2^2*T/Y;
disp(alfa,"Area of cross section,alfa(m^2) = ")