Question 957156
No.
The perimeter of a rectangle is,
{{{P=2(L+W)}}}
So,
{{{2(L+W)=12}}}
{{{L+W=6}}}
But you also know,
{{{L=2W}}}
Substituting,
{{{2W+W=6}}}
{{{3W=6}}}
{{{W=2}}}{{{cm}}}
So then,
{{{L=2(2)}}}
{{{L=4}}}{{{cm}}}