1 answer
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Original area: 72 cm * 15 cm = 1080 cm^2
New length: 72 cm - 6 cm = 66 cm
New width: 15 cm - 3 cm = 12 cm
New area: 66 cm * 12 cm = 792 cm^2
Therefore, the area of the new rectangle is 792 square centimeters.