Posted by
**vero** on
.

A rectangle has width the same as side of a square whose perimeter is 20m. the length of the rectangle is 9m. Find the perimeter of this rectangle.

W=L+20m

2L+2W=9

2L+2(w+20m)=9

2L+2w+20=9

4l+20=9

4L=20+9

4L=29

L=29/4

answered below. This is the third post of this problem.