Q$.3($a$)$ Find the closing error if any for given theodolite surveying data;

$\backslash$table$[[$Line$,$Azimuth,Length$],[$AB$,26{10}^{\text{'}},285\mathrm{.}10],[$BC$,104{35}^{\text{'}},610\mathrm{.}45],[$CD$,195{30}^{\text{'}},720\mathrm{.}48],[$DE$,258{18}^{\text{'}},203\mathrm{.}00],[$EA$,306{54}^{\text{'}},647\mathrm{.}02]]$