SOLUTION: A rectangle perimeter is 54 square meter. The rectangle is 18 meter long. What is it's width?

 

Hi,

Note: Perimeter in meters(a sum of lengths).  Area is expressed in square meters

A rectangle perimeter is 54 . The rectangle is 18 meter long. 

What is it's width 



  P = 2*18m + 2w = 54m  

       36m + 2w = 54m

             2w =  18m

              w = 9m

CHECKING our answer***

      2*36m + 2*9m = 54m