Respuesta :

Answer:

area=72

Step-by-step explanation:

let width be=x

length=2x

perimeter= 2(l+b)=36

                =2(2x+x)=36

open brackets

                =4x+2x=36

                =6x=36

transpose

                x=36/6

                x=6

width=x=6

length=2x=2(6)=12

area of rectangle=lxb

                            =12x6

                            =72

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Answer:

72

Step-by-step explanation:

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