Question

the perimeter of a room is 18 M it is 4 m wide find its length and area​

Answer 1

Step-by-step explanation:

It length will be 5.

2×(l+4)=18

l+4=18/2

l+4=9

l=9-4

l=5m

It's area will be

L×B

5×4 = 20msquare

so, length is 5 m and area is 20msquare

Answer 2

• As per the data given in the question, we have to find the length and area of a room.

        Given data:- Perimeter=$18m.$

                              Breadth=$4m.$

        To find:- the length and area of room.

         Solution:-

• As we know that the perimeter of Rectangle is

         $\Rightarrow 2(l+b)=18\\\Rightarrow 2(l+4)=18\\\Rightarrow 2l+8=18\\\Rightarrow 2l=18-8\\\Rightarrow 2l=10\\\Rightarrow l=5.$

     So, the area of the room will be

          $=length\times breadth\\=5\times4\\=20m^{2}.$

     Hence, the length and area will be $5m$ and $20m^{2}$ respectively.