The empirical formula defines the force per unit area that causes maximum stress in a column given the slenderness ratio. Determine the ratio P/A using Bisection method if the slenderness ratio Le/r =100, E= 20000kpa, ec/r^2= 0.2 and a stress ?_m = 250kpa. Fill up the table of results ( Hint: let x= P/A then substitute the highlighted numeric values to the formula. Do not worry about the units)

1 + (ec / k2 )sec 0.5 /P/(EA)(L/k)