Question 353509
From the given, {{{L = 1.4W}}}.  Also, {{{P = 2L +2W = 33}}}.
By direct substitution, {{{2*(1.4W) + 2W = 33}}}.
{{{2.8W + 2W = 33}}},
{{{4.8W = 33}}},
{{{W = 6.875}}}meters.
The length of the room is 9.625 meters.