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There is a question in the math exercise book! Fourth grade! Write it under the second volume!
Area =140 * 80 =11200m2.

Circumference = 2 *140+2 * 80 = 440m.

It is the eighth place, indicating that there are 8+8+ 1= 17 people in the horizontal row and 8+8+ 1= 17 people in the vertical row.

Then the total * * * is 17* 17=289 people.

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