Construct a network from the information in the following table and identify all the paths in the network, compute the length of each, and indicate the critical path.

$\backslash$table$[[$Activity$,\backslash$table$[[$Activity$],[$Predecessor$]],$Time $($weeks$)],[1,-,7],[2,1,10],[3,2,5],[5,2,4],[7,3,4,3],[4,5,6,5]]$