Question 611157
perimeter is the sum of the sides.
For the first rectangle, the perimeter is {{{2l + 2w}}} since the four sides are l , l , w ,w

For the second rectangle, the  sides are 2l and 4w. So the sides are 2l, 2l, 4w, 4w. Which sums to {{{4l + 8w}}}

So how much longer is the second than the first?
{{{(4l+8w) - (2l+2w)}}}
{{{(4l-2l) + (8w-2w)}}}
{{{2l + 6w}}} longer