Problem # $3(20$ points$)$

a$)$ Identify the zero$-$force members in the below truss. $($Any wrong zero force member will lead to a deduction of $0\mathrm{.}5$ mark $)$

b$)$ Determine the support reactions at A and $G.$

$($c$)$ Determine the force in each member of the Pratt truss at joint $A,$ and joint $C,$ and state if the members are in tension or compression.