Your problem · Running track perimeter

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50 m30 m
  1. What shapes? Two straights, two semicircles
  2. What’s asked? Total distance around (perimeter)
  3. Length of the two straights
  4. Length of the curved bits
  5. Add them together

Coach

Start with the easy bit — the two straights (the orange parts). Each is 50 m. How long are they together?

straights =+=

Both straights are the same length — fill them in, then add.

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