Question 955350
W=width; L=length=W+4m; P=perimeter
P=2(L+W) Substitute for L
28m=2(W+4m+W) Divide each side by 2.
14m=2W+4m Subtract 4m from each side.
10m=2W Divide each side by 2.
5m=W Width is 5 meters.
L=W+4m=5m+4m=9m Length is 9 meters.
{{{Area=L*W=9m*5m=45m^2}}} 
ANSWER: The area is 45 square meters.