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An open box is made from a 40-cm by 60-cm piece of tin by cutting a square from each corner and folding up the edges. The area of the resulting base is 2204 cm^2. What is the length of the sides of
An open box is made from a 40-cm by 60-cm piece of tin by cutting a square from each corner and folding up the edges. The area of the resulting base is 2204 cm^2. What is the length of the sides of the squares?