Question
Owen used 3 stretchable bands to form the sides of triangle QRS where QR = 6 cm, RS = r cm and QS = 4r cm. Lee stretches two of the elastic bands and enlarges triangle QRS. The sides RS and QS are stretched to 2 times its original length. What is the perimeter of the stretched triangle QRS?
2 m

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Owen used 3 stretchable bands to form the sides of triangle QRS where QR = 6 cm, RS = r cm and QS = 4r cm. Lee stretches two of the elastic bands and enlarges triangle QRS. The sides RS and QS are stretched to 2 times its original length. What is the perimeter of the stretched triangle QRS?