The pin$-$jointed structure seen below supports a load of $P=1\mathrm{.}5$ kips at joint $C.$ Each member of the

truss is a hollow circular rod with outer diameter $0\mathrm{.}75$ in $.$ and wall thickness $t=0\mathrm{.}125in.$ Determine the

axial stresses, in ksi, ${}_1,{}_3,$ and ${}_5$ in members $(1),(3)$ and $(5)$ respectively.