Question 966663
{{{L=2W}}}
.
.

{{{P=2(L+W)=66}}}
{{{L+W=33}}}
Substituting,
{{{2W+W=33}}}
{{{3W=33}}}
{{{W=11}}}{{{cm}}}
Then,
{{{L=2(11)}}}
{{{L=22}}}{{{cm}}}