Respuesta :

Answer:

The circumference is 62.8.

Step-by-step explanation:

  1. Find the diameter (in this case, 20mm)
  2. Multiply the diameter by 3.14, or pi. (Pi can be a different number depending on the problem but 3.14 is the most used one)
  3. The product of the diameter multiplied by Pi is the circumference of the circle!
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