The perimeter of a rectangle is 72m. What are its dimensions that yield the maximum area?

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Theperimeterofarectangleis72m.Whatareitsdimensionsthatyieldthemaximumarea?Theperimeterofarectangleis

The perimeter of a rectangle is 72m. What are its dimensions that yield the maximum area?
The perimeter of a rectangle is 72m. What are its dimensions that yield the maximum area?

The perimeter of a rectangle is 72m. What are its dimensions that yield the maximum area?
矩形周长为72cm,当长为多少时面积最大?
当其为正方形时,即 长=宽=18cm时 Smax=18*18=324cm(平方厘米)

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