Given a $1\mathrm{.}9$ meter Wide Flange steel compression member with $A=4989m{m}^2,Ix=89529282m{m}^4$ and $ly=3082839m{m}^4$ with Fy$=$

$345$ MPa $.$ Calculate the critical buckling stress in MPa if both ends are fixed or rigid. Express your answer in $2$ decimal places.

Given a $1\mathrm{.}4$ meter Wide Flange steel compression member with $A=4896m{m}^2,|x||=86581367m{m}^4$ and $ly=3241531mm{m}^4$ with Fy$=$

$345$ MPa $.$ Calculate the critical buckling stress in MPa if both ends are fixed or rigid. Express your answer in $2$ decimal places.

PLS GIVE A DETAILED SOLUTION AND CORRECT ANSWER.