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🥧 Pi Detective

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I can use π to find a circumference.

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📖 Learn first

For every circle, circumference ÷ diameter ≈ 3.14 (π). So C = π × d.

Example: d = 14 cm, π ≈ 22/7

  1. 22/7 × 14
  2. = 44 cm

Questions get harder as you go. The last ones ask you to type the answer.