Question
Vincent used 3 elastic bands to form the sides of triangle STU where ST = 9 cm, TU = s cm and SU = 3s cm. Owen stretches two of the elastic bands and enlarges triangle STU. The sides TU and SU are stretched to 2 times its original length. What is the perimeter of the stretched triangle STU?
2 m

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Vincent used 3 elastic bands to form the sides of triangle STU where ST = 9 cm, TU = s cm and SU = 3s cm. Owen stretches two of the elastic bands and enlarges triangle STU. The sides TU and SU are stretched to 2 times its original length. What is the perimeter of the stretched triangle STU?