A disgusting truss is shown below. For every member shown below, the cross section is equal to $0\mathrm{.}02m^2.$ Knowing this, determine the normal stress in the following members:

a$)$ Member DF

b$)$ Member EF

c$)$ Member BE

d$)$ Member EH

e$)$ Member JK

$($Note: Please do not solve for all of the forces in each member of the truss. I have previously worked out the forces carried by all $36$ solvable members of this truss, and I have posted this solution to Blackboard. You are more than welcome to use my solutions to identify the forces carried by each member of the truss.$)$