A rectangle 5 cm long and 3 cm wide is enlarged by 3:1. What are the perimeter and area of the new figure?

The length of the new figure is: 3x5 = 15cm
Width: 3x3 = 9cm
So the perimeter is (15 + 9) x2 = 48 meters
The area is: 15x9 = 135 square centimeters
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