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Sagot :

Answer:

  1. 32.8
  2. 23.7
  3. 60
  4. 28.8
  5. 42.8
  6. 120.8
  7. 79.2
  8. 111.6
  9. 74.4
  10. 28.3
  11. 31.4
  12. 15.7

Step-by-step explanation:

perimeter = # of sides multiplied by length of one side.

circumference of circle = 2πr