A rectangular room is 1.8 times as long as it is wide, and its perimeter is 28 meters. Find the dimension of the room. Length: meters
Width: meters

Step-by-step explanation:

Let,

Width or breadth of the rectangular room be = x

So, Length of the rectangular room = 1.8 × x = 1.8x

As given,

Perimeter of the room = 28 m

Therefore,

By the problem,

=> 2 (l + b) = 28 m

=> 2 (1.8x + x) = 28

=> 2 × 2.8x = 28

=> 5.6x = 28

=> x = 5

Now,

As we got, x = 5 so,

Hence ,

Dimensions of the room are

Length = 9 meters, and

Width = 5 meters (Ans)

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.