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Perimeter of rectilinear shapes

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    calculate the perimeter
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  • 52mm
  •  20
  • 44m get 50 bonus points
  •  15
  • 66cm
  •  25
  • 38m (exchange bonus points with another group)
  •  15
  • 48cm
  •  20
  • 46mm (get 30 bonus points from the next group)
  •  20
  • 70cm
  •  25
  • 46mm
  •  25
  • 40m (swap bonus point with the previous group)
  •  25
  • 54 m ( take 55 bonus points from any group)
  •  25