Question 610871
To find the perimeter of a parallelogram, we use this formula: {{{2w+2l=p}}}. Let's map out our information mathematically:
...has a perimeter of 30 feet (=30). The length is 3 more than the width (w+3). 
Let's plug these into our equation: {{{2w+2(w+3)=30}}}
Let's simplify that: {{{simplify_cartoon( 2*w+2*(w+3)=30 )}}}.
We now know that w=6. Let's plug that back into our original equation:
{{{2(6)+2(6+3)=30}}}. Let's simplify that into: {{{2(6)+2(9)=30}}}.
We now know that the width is 6 and the length is 9. :)