Question
Reggie used 3 stretchable bands to form the sides of triangle YZA where YZ = 9 cm, ZA = r cm and YA = 2r cm. Xavier stretches two of the elastic bands and enlarges triangle YZA. The sides ZA and YA are stretched to 2 times its original length. What is the perimeter of the stretched triangle YZA?
2 m

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Reggie used 3 stretchable bands to form the sides of triangle YZA where YZ = 9 cm, ZA = r cm and YA = 2r cm. Xavier stretches two of the elastic bands and enlarges triangle YZA. The sides ZA and YA are stretched to 2 times its original length. What is the perimeter of the stretched triangle YZA?