Answer: The width of the room = 5 meters
The length of the room = 9 meters
Step-by-step explanation:
Let the w denotes the width of the room , then length of the room will be :-
\(\text{length}=4+w\)
The formula of perimeter of rectangle :-
\(\text{Perimeter}=2(l+w)\\\\\Rightarrow\ 28=2(4+w+w)\\\\\Rightarrow\ 28=2(4+2w)\\\\\Rightarrow\ 28 =8+4w\\\\\Rightarrow\ 4w=20\\\\\Rightarrow\ w=5\)
Hence, The width of the room = 5 meters
The length of the room = 5+4 = 9 meters
