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Australian AMC 2016 - Upper Primary Question 15

AMC AUSTRALIA · Australian AMC 2016 - Upper Primary

Question 15

The perimeter of the outer square is 36 cm, and the perimeter of the inner square is 20 cm.

If the four rectangles are all identical, what is the perimeter of the shaded rectangle in centimetres?

Question illustration
  1. 12
  2. 14
  3. 24
  4. 20
  5. 18