Respuesta :

williamjosephcamp

Answer:

40

Step-by-step explanation:

Let x = width, then 3x = length, Area = l x w so,

 

(3x)(x) = 75

 

3x2 = 75

 

x = 5 = width, length = 15

 

Perimeter = 2l +2w = 10 + 30 = 40

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