Question 1052609
The area of a rectangle is,
{{{A=L*W}}}
{{{L*W=200}}}
and
{{{W=2L}}}
So,
{{{L(2L)=200}}}
{{{L^2=100}}}
{{{L=10}}}
So then,
{{{W=2(10)}}}
{{{W=20}}}