Question
Ken used 3 rubber bands to form the sides of triangle ZAB where ZA = 9 cm, AB = f cm and ZB = 4f cm. Gabriel stretches two of the elastic bands and enlarges triangle ZAB. The sides AB and ZB are stretched to 2 times its original length. What is the perimeter of the stretched triangle ZAB?
2 m

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Ken used 3 rubber bands to form the sides of triangle ZAB where ZA = 9 cm, AB = f cm and ZB = 4f cm. Gabriel stretches two of the elastic bands and enlarges triangle ZAB. The sides AB and ZB are stretched to 2 times its original length. What is the perimeter of the stretched triangle ZAB?