Please solve $6\mathrm{.}45$ and $6\mathrm{.}46$ using the method of sections.

Figures for $6\mathrm{.}45$ and $6\mathrm{.}46$

$6\mathrm{.}45$ The Pratt railroad bridge truss illustrated in Photo P$6\mathrm{.}45$ is modeled in Fig. P$6\mathrm{.}45,$ where the joints between all members are assumed to be pin connections. For the loading and dimensions shown in the figure, determine the force in members DG and EG$.$

$6\mathrm{.}46$ For the truss of Prob. $6\mathrm{.}45,$ determine the force in members GH and GI$.$

Figures for $6\mathrm{.}45$ and $6\mathrm{.}46$