1. The sum of two numbers is 140 and their difference is 20. What are the two numbers?
1 answer:
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Answer:
The answer is: 181.5 square centimeters.
Step-by-step explanation:
The cube has six faces, and each face is a square with sides of length 5.5, so the area of one of this faces is , adding the six faces, we get the answer:
