College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

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Two students go into Tony's Pizza Palace and order a 12-in. (diameter) pizza. Shortly thereafter, the waitress brings an 8-in. pizza special. She explains that the 12-in. pizza was given to someone else by mistake and they could have the 8-in. now and she would bring another 8-in. shortly to make up for the missing 12-in. pizza. Was this a good deal